qq

java/samples/tcp/Chat/ChatClientJ130_lesson4_group1/build.xml

@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- You may freely edit this file. See commented blocks below for -->
+<!-- some examples of how to customize the build. -->
+<!-- (If you delete it and reopen the project it will be recreated.) -->
+<!-- By default, only the Clean and Build commands use this build script. -->
+<!-- Commands such as Run, Debug, and Test only use this build script if -->
+<!-- the Compile on Save feature is turned off for the project. -->
+<!-- You can turn off the Compile on Save (or Deploy on Save) setting -->
+<!-- in the project's Project Properties dialog box.-->
+<project name="ChatClientJ130_lesson4_group1" default="default" basedir=".">
+    <description>Builds, tests, and runs the project ChatClientJ130_lesson4_group1.</description>
+    <import file="nbproject/build-impl.xml"/>
+    <!--
+
+    There exist several targets which are by default empty and which can be 
+    used for execution of your tasks. These targets are usually executed 
+    before and after some main targets. They are: 
+
+      -pre-init:                 called before initialization of project properties
+      -post-init:                called after initialization of project properties
+      -pre-compile:              called before javac compilation
+      -post-compile:             called after javac compilation
+      -pre-compile-single:       called before javac compilation of single file
+      -post-compile-single:      called after javac compilation of single file
+      -pre-compile-test:         called before javac compilation of JUnit tests
+      -post-compile-test:        called after javac compilation of JUnit tests
+      -pre-compile-test-single:  called before javac compilation of single JUnit test
+      -post-compile-test-single: called after javac compilation of single JUunit test
+      -pre-jar:                  called before JAR building
+      -post-jar:                 called after JAR building
+      -post-clean:               called after cleaning build products
+
+    (Targets beginning with '-' are not intended to be called on their own.)
+
+    Example of inserting an obfuscator after compilation could look like this:
+
+        <target name="-post-compile">
+            <obfuscate>
+                <fileset dir="${build.classes.dir}"/>
+            </obfuscate>
+        </target>
+
+    For list of available properties check the imported 
+    nbproject/build-impl.xml file. 
+
+
+    Another way to customize the build is by overriding existing main targets.
+    The targets of interest are: 
+
+      -init-macrodef-javac:     defines macro for javac compilation
+      -init-macrodef-junit:     defines macro for junit execution
+      -init-macrodef-debug:     defines macro for class debugging
+      -init-macrodef-java:      defines macro for class execution
+      -do-jar:                  JAR building
+      run:                      execution of project 
+      -javadoc-build:           Javadoc generation
+      test-report:              JUnit report generation
+
+    An example of overriding the target for project execution could look like this:
+
+        <target name="run" depends="ChatClientJ130_lesson4_group1-impl.jar">
+            <exec dir="bin" executable="launcher.exe">
+                <arg file="${dist.jar}"/>
+            </exec>
+        </target>
+
+    Notice that the overridden target depends on the jar target and not only on 
+    the compile target as the regular run target does. Again, for a list of available 
+    properties which you can use, check the target you are overriding in the
+    nbproject/build-impl.xml file. 
+
+    -->
+</project>

java/samples/tcp/Chat/ChatClientJ130_lesson4_group1/build/built-jar.properties

@@ -0,0 +1,4 @@
+#Wed, 25 Jan 2023 21:23:33 +0300
+
+
+C\:\\Users\\denis.LAPTOP-4LI8UQ4O\\OneDrive\\\u0414\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u044b\\NetBeansProjects\\ChatClientJ130_lesson4_group1=

java/samples/tcp/Chat/ChatClientJ130_lesson4_group1/client.property

@@ -0,0 +1,2 @@
+#Wed Jan 25 16:16:48 MSK 2023
+username=Denis

java/samples/tcp/Chat/ChatClientJ130_lesson4_group1/dist/README.TXT

@@ -0,0 +1,32 @@
+========================
+BUILD OUTPUT DESCRIPTION
+========================
+
+When you build an Java application project that has a main class, the IDE
+automatically copies all of the JAR
+files on the projects classpath to your projects dist/lib folder. The IDE
+also adds each of the JAR files to the Class-Path element in the application
+JAR files manifest file (MANIFEST.MF).
+
+To run the project from the command line, go to the dist folder and
+type the following:
+
+java -jar "ChatClientJ130_lesson4_group1.jar" 
+
+To distribute this project, zip up the dist folder (including the lib folder)
+and distribute the ZIP file.
+
+Notes:
+
+* If two JAR files on the project classpath have the same name, only the first
+JAR file is copied to the lib folder.
+* Only JAR files are copied to the lib folder.
+If the classpath contains other types of files or folders, these files (folders)
+are not copied.
+* If a library on the projects classpath also has a Class-Path element
+specified in the manifest,the content of the Class-Path element has to be on
+the projects runtime path.
+* To set a main class in a standard Java project, right-click the project node
+in the Projects window and choose Properties. Then click Run and enter the
+class name in the Main Class field. Alternatively, you can manually type the
+class name in the manifest Main-Class element.

java/samples/tcp/Chat/ChatClientJ130_lesson4_group1/dist/client.property

@@ -0,0 +1,2 @@
+#Wed Jan 25 21:23:49 MSK 2023
+username=Denis

java/samples/tcp/Chat/ChatClientJ130_lesson4_group1/manifest.mf

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+Manifest-Version: 1.0
+X-COMMENT: Main-Class will be added automatically by build
+

java/samples/tcp/Chat/ChatClientJ130_lesson4_group1/nbproject/genfiles.properties

@@ -0,0 +1,8 @@
+build.xml.data.CRC32=016dcbec
+build.xml.script.CRC32=9c6d8abd
+build.xml.stylesheet.CRC32=8064a381@1.80.1.48
+# This file is used by a NetBeans-based IDE to track changes in generated files such as build-impl.xml.
+# Do not edit this file. You may delete it but then the IDE will never regenerate such files for you.
+nbproject/build-impl.xml.data.CRC32=016dcbec
+nbproject/build-impl.xml.script.CRC32=5111007c
+nbproject/build-impl.xml.stylesheet.CRC32=830a3534@1.80.1.48

java/samples/tcp/Chat/ChatClientJ130_lesson4_group1/nbproject/private/private.properties

@@ -0,0 +1,2 @@
+compile.on.save=true
+user.properties.file=C:\\Users\\denis.LAPTOP-4LI8UQ4O\\AppData\\Roaming\\NetBeans\\8.2\\build.properties

java/samples/tcp/Chat/ChatClientJ130_lesson4_group1/nbproject/private/private.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project-private xmlns="http://www.netbeans.org/ns/project-private/1">
+    <editor-bookmarks xmlns="http://www.netbeans.org/ns/editor-bookmarks/2" lastBookmarkId="0"/>
+    <open-files xmlns="http://www.netbeans.org/ns/projectui-open-files/2">
+        <group>
+            <file>file:/C:/Users/denis.LAPTOP-4LI8UQ4O/OneDrive/Документы/NetBeansProjects/ChatClientJ130_lesson4_group1/src/chatclientj130_lesson4_group1/ChatServer.java</file>
+            <file>file:/C:/Users/denis.LAPTOP-4LI8UQ4O/OneDrive/Документы/NetBeansProjects/ChatClientJ130_lesson4_group1/src/chatclientj130_lesson4_group1/MainClass.java</file>
+            <file>file:/C:/Users/denis.LAPTOP-4LI8UQ4O/OneDrive/Документы/NetBeansProjects/ChatClientJ130_lesson4_group1/src/chatclientj130_lesson4_group1/ClientFrame.java</file>
+            <file>file:/C:/Users/denis.LAPTOP-4LI8UQ4O/OneDrive/Документы/NetBeansProjects/ChatClientJ130_lesson4_group1/src/chatclientj130_lesson4_group1/ClientProperties.java</file>
+        </group>
+    </open-files>
+</project-private>

java/samples/tcp/Chat/ChatClientJ130_lesson4_group1/nbproject/project.properties

@@ -0,0 +1,74 @@
+annotation.processing.enabled=true
+annotation.processing.enabled.in.editor=false
+annotation.processing.processor.options=
+annotation.processing.processors.list=
+annotation.processing.run.all.processors=true
+annotation.processing.source.output=${build.generated.sources.dir}/ap-source-output
+build.classes.dir=${build.dir}/classes
+build.classes.excludes=**/*.java,**/*.form
+# This directory is removed when the project is cleaned:
+build.dir=build
+build.generated.dir=${build.dir}/generated
+build.generated.sources.dir=${build.dir}/generated-sources
+# Only compile against the classpath explicitly listed here:
+build.sysclasspath=ignore
+build.test.classes.dir=${build.dir}/test/classes
+build.test.results.dir=${build.dir}/test/results
+# Uncomment to specify the preferred debugger connection transport:
+#debug.transport=dt_socket
+debug.classpath=\
+    ${run.classpath}
+debug.test.classpath=\
+    ${run.test.classpath}
+# \u0424\u0430\u0439\u043b\u044b \u0432 \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u0435 build.classes.dir, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f \u0438\u0441\u043a\u043b\u044e\u0447\u0438\u0442\u044c \u0438\u0437 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0430\u0440\u0445\u0438\u0432\u0430 jar
+dist.archive.excludes=
+# This directory is removed when the project is cleaned:
+dist.dir=dist
+dist.jar=${dist.dir}/ChatClientJ130_lesson4_group1.jar
+dist.javadoc.dir=${dist.dir}/javadoc
+excludes=
+includes=**
+jar.compress=false
+javac.classpath=
+# Space-separated list of extra javac options
+javac.compilerargs=
+javac.deprecation=false
+javac.external.vm=true
+javac.processorpath=\
+    ${javac.classpath}
+javac.source=1.8
+javac.target=1.8
+javac.test.classpath=\
+    ${javac.classpath}:\
+    ${build.classes.dir}
+javac.test.processorpath=\
+    ${javac.test.classpath}
+javadoc.additionalparam=
+javadoc.author=false
+javadoc.encoding=${source.encoding}
+javadoc.noindex=false
+javadoc.nonavbar=false
+javadoc.notree=false
+javadoc.private=false
+javadoc.splitindex=true
+javadoc.use=true
+javadoc.version=false
+javadoc.windowtitle=
+main.class=chatclientj130_lesson4_group1.MainClass
+manifest.file=manifest.mf
+meta.inf.dir=${src.dir}/META-INF
+mkdist.disabled=false
+platform.active=default_platform
+run.classpath=\
+    ${javac.classpath}:\
+    ${build.classes.dir}
+# Space-separated list of JVM arguments used when running the project.
+# You may also define separate properties like run-sys-prop.name=value instead of -Dname=value.
+# To set system properties for unit tests define test-sys-prop.name=value:
+run.jvmargs=
+run.test.classpath=\
+    ${javac.test.classpath}:\
+    ${build.test.classes.dir}
+source.encoding=UTF-8
+src.dir=src
+test.src.dir=test

java/samples/tcp/Chat/ChatClientJ130_lesson4_group1/nbproject/project.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://www.netbeans.org/ns/project/1">
+    <type>org.netbeans.modules.java.j2seproject</type>
+    <configuration>
+        <data xmlns="http://www.netbeans.org/ns/j2se-project/3">
+            <name>ChatClientJ130_lesson4_group1</name>
+            <source-roots>
+                <root id="src.dir"/>
+            </source-roots>
+            <test-roots>
+                <root id="test.src.dir"/>
+            </test-roots>
+        </data>
+    </configuration>
+</project>

java/samples/tcp/Chat/ChatClientJ130_lesson4_group1/src/chatclientj130_lesson4_group1/ChatServer.java

@@ -0,0 +1,125 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package chatclientj130_lesson4_group1;
+
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.net.Socket;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import javax.swing.JLabel;
+import javax.swing.JTextArea;
+
+/**
+ *
+ * @author Denis
+ */
+public class ChatServer implements Runnable{
+    
+    private static ChatServer chatServer;
+    private boolean isExit = false;
+    private JLabel topLabel;
+    private JTextArea chatingText;
+    
+    private ChatServer(JLabel topLabel, JTextArea chatingText){
+        this.chatingText = chatingText;
+        this.topLabel = topLabel;
+    }
+    
+    public static ChatServer getState(JLabel topLabel, JTextArea chatingText){
+        Thread thread = null;
+        if(chatServer==null) {
+            chatServer = new ChatServer(topLabel, chatingText);
+            thread = new Thread(chatServer);
+            thread.start();
+        }
+        if(thread!=null && thread.getState().toString().equals("TERMINATED")){
+            thread = new Thread(chatServer);
+            thread.start();
+        }
+        return chatServer;
+    }
+
+    @Override
+    public void run() {
+        while(!isExit){
+            updateChat();
+            try {Thread.sleep(1000);} catch (InterruptedException ex) {}
+        }
+    }
+    
+    private void updateChat(){
+        try (Socket socket = new Socket(ClientProperties.getState().getServerHost(), ClientProperties.getState().getServerPort());
+                InputStream is = socket.getInputStream();
+                OutputStream os = socket.getOutputStream();){
+                //BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));){
+            String labelText = topLabel.getText();
+            if(socket.isConnected()) topLabel.setText("<html><font color='green'>" + labelText + "</font></html>");
+            //writer.write("get messages\n");
+            os.write("get messages".getBytes());
+            socket.shutdownOutput();
+            //writer.flush();
+            byte[] buffer = new byte[1024];
+            int length;
+            StringBuilder sb = new StringBuilder();
+            while((length=is.read(buffer))>-1){
+                sb.append(new String(buffer, 0, length));
+            }
+            String answer = sb.toString();
+            chatingText.setText(answer);
+        } catch (IOException ex) {
+            String labelText = topLabel.getText();
+            topLabel.setText("<html><font color='red'>" + labelText + "</font></html>");
+            Logger.getLogger(MainClass.class.getName()).log(Level.SEVERE, null, ex);
+        }
+    }
+    
+    public void sendMessage(String message){
+        String username = ClientProperties.getState().getUsername();
+        message = "post" + username + " >> " + getCurrentTime() + " >> " + message;
+        try (Socket socket = new Socket(ClientProperties.getState().getServerHost(), ClientProperties.getState().getServerPort());
+                InputStream is = socket.getInputStream();
+                OutputStream os = socket.getOutputStream();){
+                //BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));){
+            String labelText = topLabel.getText();
+            if(socket.isConnected()) topLabel.setText("<html><font color='green'>" + labelText + "</font></html>");
+            System.out.println(message);
+            os.write(message.getBytes());
+            //writer.write(message + "\n");
+            socket.shutdownOutput();
+            byte[] buffer = new byte[1024];
+            int length;
+            StringBuilder sb = new StringBuilder();
+            while((length=is.read(buffer))>-1){
+                sb.append(new String(buffer, 0, length));
+            }
+            String answer = sb.toString();
+            System.out.println(answer);
+        } catch (IOException ex) {
+            String labelText = topLabel.getText();
+            topLabel.setText("<html><font color='red'>" + labelText + "</font></html>");
+            Logger.getLogger(MainClass.class.getName()).log(Level.SEVERE, null, ex);
+        }
+    }
+    
+    private String getCurrentTime(){
+        Date currentDate = new Date(System.currentTimeMillis());
+        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy:MM:dd hh:mm:ss");
+        String time = dateFormat.format(currentDate);
+        return time;
+    }
+    
+    public void exit(){
+        isExit = true;
+    }
+}

java/samples/tcp/Chat/ChatClientJ130_lesson4_group1/src/chatclientj130_lesson4_group1/ClientFrame.java

@@ -0,0 +1,93 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package chatclientj130_lesson4_group1;
+
+import java.awt.BorderLayout;
+import java.awt.FlowLayout;
+import javax.swing.*; 
+
+/**
+ *
+ * @author Denis
+ */
+public class ClientFrame extends JFrame{
+    
+    private final JMenuBar menuBar;
+    private final JMenu menu;
+    private final JMenuItem itemExit;
+    private final JMenuItem itemServerHost;
+    private final JButton send;
+    private final JTextField messageText;
+    private final JTextArea chatingText;
+    private final JLabel topLabel;
+    
+    private String serverHost;
+    private int serverPort;
+    private String username;
+    
+    public ClientFrame(){
+        super("Chat client");
+        setSize(500, 700);
+        setDefaultCloseOperation(EXIT_ON_CLOSE);
+        getSettings();
+        setLayout(new BorderLayout());
+        topLabel = new JLabel(serverHost + ":" + serverPort + " >>> " + username);
+        
+        if(username==null) {
+            ClientProperties.getState().setUsername(JOptionPane.showInputDialog(this, "Введите имя пользователя"));
+            getSettings();
+            topLabel.setText(serverHost + ":" + serverPort + " >>> " + username);
+        }
+        
+        menuBar = new JMenuBar();
+        menu = new JMenu("File");
+        itemExit = new JMenuItem("Exit");
+        itemServerHost = new JMenuItem("Server settings");
+        setJMenuBar(menuBar);
+        menuBar.add(menu);
+        menu.add(itemExit);
+        menu.add(itemServerHost);
+        chatingText = new JTextArea();
+        messageText = new JTextField(" ");
+        send = new JButton("Send");
+        
+        add(topLabel, BorderLayout.NORTH);
+        chatingText.setEditable(false);
+        add(chatingText, BorderLayout.CENTER);
+        
+        messageText.setColumns(30);
+        
+        JPanel bottom = new JPanel(new FlowLayout());
+        bottom.add(messageText);
+        bottom.add(send);
+        
+        add(bottom, BorderLayout.SOUTH);
+        addListeners();
+        setLocationRelativeTo(null);
+        setVisible(true);
+        ChatServer.getState(topLabel, chatingText);
+    }
+    
+    private void addListeners(){
+        itemExit.addActionListener(e -> {
+            ChatServer.getState(topLabel, chatingText).exit();
+            dispose();
+        });
+        itemServerHost.addActionListener(e -> {
+            topLabel.setText(JOptionPane.showInputDialog(this, "Введите ip-адрес сервера"));
+        });
+        send.addActionListener(e -> {
+            String message = messageText.getText();
+            ChatServer.getState(topLabel, chatingText).sendMessage(message);
+        });
+    }
+    
+    private void getSettings(){
+        serverHost = ClientProperties.getState().getServerHost();
+        serverPort = ClientProperties.getState().getServerPort();
+        username = ClientProperties.getState().getUsername();
+    }
+}

java/samples/tcp/Chat/ChatClientJ130_lesson4_group1/src/chatclientj130_lesson4_group1/ClientProperties.java

@@ -0,0 +1,73 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package chatclientj130_lesson4_group1;
+
+import java.io.File;
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.nio.file.Paths;
+import java.util.Properties;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ *
+ * @author Denis
+ */
+public class ClientProperties {
+    private final Properties properties;
+    private final static ClientProperties propertyState = new ClientProperties();
+    private final File propertyFile;
+    
+    private ClientProperties(){
+        properties = new Properties();
+        String path = Paths.get("").toAbsolutePath().toString() + File.separator + "client.property";
+        propertyFile = new File(path);
+        try {
+            if(!propertyFile.exists()){
+                propertyFile.createNewFile();
+            }
+        } catch (IOException ex) {
+            Logger.getLogger(ClientProperties.class.getName()).log(Level.SEVERE, null, ex);
+        }
+        
+    }
+    
+    public final static ClientProperties getState(){
+        return propertyState;
+    }
+    
+    public String getServerHost(){
+        try {properties.load(new FileReader(propertyFile));} catch (IOException ex) {}
+        return properties.getProperty("host", "188.134.85.87");
+    }
+    public int getServerPort(){
+        try {properties.load(new FileReader(propertyFile));} catch (IOException ex) {}
+        String port = properties.getProperty("port", "8092");
+        return port.matches("\\d+") ? Integer.valueOf(port) : 7007;
+    }
+    
+    public String getUsername(){
+        try {properties.load(new FileReader(propertyFile));} catch (IOException ex) {}
+        return properties.getProperty("username");
+    }
+    
+    public void setServerHost(String severHost){
+        properties.setProperty("host", severHost);
+        try {properties.store(new FileWriter(propertyFile), null);} catch (IOException ex) {}
+    }
+    
+    public void setServerPort(String severPort){
+        properties.setProperty("port", severPort);
+        try {properties.store(new FileWriter(propertyFile), null);} catch (IOException ex) {}
+    }
+    
+    public void setUsername(String username){
+        properties.setProperty("username", username);
+        try {properties.store(new FileWriter(propertyFile), null);} catch (IOException ex) {}
+    }
+}

java/samples/tcp/Chat/ChatClientJ130_lesson4_group1/src/chatclientj130_lesson4_group1/MainClass.java

@@ -0,0 +1,21 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package chatclientj130_lesson4_group1;
+
+/**
+ *
+ * @author Denis
+ */
+public class MainClass {
+
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String[] args) {
+        new ClientFrame();
+    }
+    
+}

java/samples/tcp/Chat/ChatServerJ130_lesson4_group1/build.xml

@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- You may freely edit this file. See commented blocks below for -->
+<!-- some examples of how to customize the build. -->
+<!-- (If you delete it and reopen the project it will be recreated.) -->
+<!-- By default, only the Clean and Build commands use this build script. -->
+<!-- Commands such as Run, Debug, and Test only use this build script if -->
+<!-- the Compile on Save feature is turned off for the project. -->
+<!-- You can turn off the Compile on Save (or Deploy on Save) setting -->
+<!-- in the project's Project Properties dialog box.-->
+<project name="ChatServerJ130_lesson4_group1" default="default" basedir=".">
+    <description>Builds, tests, and runs the project ChatServerJ130_lesson4_group1.</description>
+    <import file="nbproject/build-impl.xml"/>
+    <!--
+
+    There exist several targets which are by default empty and which can be 
+    used for execution of your tasks. These targets are usually executed 
+    before and after some main targets. They are: 
+
+      -pre-init:                 called before initialization of project properties
+      -post-init:                called after initialization of project properties
+      -pre-compile:              called before javac compilation
+      -post-compile:             called after javac compilation
+      -pre-compile-single:       called before javac compilation of single file
+      -post-compile-single:      called after javac compilation of single file
+      -pre-compile-test:         called before javac compilation of JUnit tests
+      -post-compile-test:        called after javac compilation of JUnit tests
+      -pre-compile-test-single:  called before javac compilation of single JUnit test
+      -post-compile-test-single: called after javac compilation of single JUunit test
+      -pre-jar:                  called before JAR building
+      -post-jar:                 called after JAR building
+      -post-clean:               called after cleaning build products
+
+    (Targets beginning with '-' are not intended to be called on their own.)
+
+    Example of inserting an obfuscator after compilation could look like this:
+
+        <target name="-post-compile">
+            <obfuscate>
+                <fileset dir="${build.classes.dir}"/>
+            </obfuscate>
+        </target>
+
+    For list of available properties check the imported 
+    nbproject/build-impl.xml file. 
+
+
+    Another way to customize the build is by overriding existing main targets.
+    The targets of interest are: 
+
+      -init-macrodef-javac:     defines macro for javac compilation
+      -init-macrodef-junit:     defines macro for junit execution
+      -init-macrodef-debug:     defines macro for class debugging
+      -init-macrodef-java:      defines macro for class execution
+      -do-jar:                  JAR building
+      run:                      execution of project 
+      -javadoc-build:           Javadoc generation
+      test-report:              JUnit report generation
+
+    An example of overriding the target for project execution could look like this:
+
+        <target name="run" depends="ChatServerJ130_lesson4_group1-impl.jar">
+            <exec dir="bin" executable="launcher.exe">
+                <arg file="${dist.jar}"/>
+            </exec>
+        </target>
+
+    Notice that the overridden target depends on the jar target and not only on 
+    the compile target as the regular run target does. Again, for a list of available 
+    properties which you can use, check the target you are overriding in the
+    nbproject/build-impl.xml file. 
+
+    -->
+</project>

java/samples/tcp/Chat/ChatServerJ130_lesson4_group1/build/built-jar.properties

@@ -0,0 +1,4 @@
+#Wed, 25 Jan 2023 21:19:31 +0300
+
+
+C\:\\Users\\denis.LAPTOP-4LI8UQ4O\\OneDrive\\\u0414\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u044b\\NetBeansProjects\\ChatServerJ130_lesson4_group1=

java/samples/tcp/Chat/ChatServerJ130_lesson4_group1/dist/README.TXT

@@ -0,0 +1,32 @@
+========================
+BUILD OUTPUT DESCRIPTION
+========================
+
+When you build an Java application project that has a main class, the IDE
+automatically copies all of the JAR
+files on the projects classpath to your projects dist/lib folder. The IDE
+also adds each of the JAR files to the Class-Path element in the application
+JAR files manifest file (MANIFEST.MF).
+
+To run the project from the command line, go to the dist folder and
+type the following:
+
+java -jar "ChatServerJ130_lesson4_group1.jar" 
+
+To distribute this project, zip up the dist folder (including the lib folder)
+and distribute the ZIP file.
+
+Notes:
+
+* If two JAR files on the project classpath have the same name, only the first
+JAR file is copied to the lib folder.
+* Only JAR files are copied to the lib folder.
+If the classpath contains other types of files or folders, these files (folders)
+are not copied.
+* If a library on the projects classpath also has a Class-Path element
+specified in the manifest,the content of the Class-Path element has to be on
+the projects runtime path.
+* To set a main class in a standard Java project, right-click the project node
+in the Projects window and choose Properties. Then click Run and enter the
+class name in the Main Class field. Alternatively, you can manually type the
+class name in the manifest Main-Class element.

java/samples/tcp/Chat/ChatServerJ130_lesson4_group1/manifest.mf

@@ -0,0 +1,3 @@
+Manifest-Version: 1.0
+X-COMMENT: Main-Class will be added automatically by build
+

java/samples/tcp/Chat/ChatServerJ130_lesson4_group1/nbproject/genfiles.properties

@@ -0,0 +1,8 @@
+build.xml.data.CRC32=c2fa2be0
+build.xml.script.CRC32=cf302020
+build.xml.stylesheet.CRC32=8064a381@1.80.1.48
+# This file is used by a NetBeans-based IDE to track changes in generated files such as build-impl.xml.
+# Do not edit this file. You may delete it but then the IDE will never regenerate such files for you.
+nbproject/build-impl.xml.data.CRC32=c2fa2be0
+nbproject/build-impl.xml.script.CRC32=6be3a0a1
+nbproject/build-impl.xml.stylesheet.CRC32=830a3534@1.80.1.48

java/samples/tcp/Chat/ChatServerJ130_lesson4_group1/nbproject/private/private.properties

@@ -0,0 +1,2 @@
+compile.on.save=true
+user.properties.file=C:\\Users\\denis.LAPTOP-4LI8UQ4O\\AppData\\Roaming\\NetBeans\\8.2\\build.properties

java/samples/tcp/Chat/ChatServerJ130_lesson4_group1/nbproject/private/private.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project-private xmlns="http://www.netbeans.org/ns/project-private/1">
+    <editor-bookmarks xmlns="http://www.netbeans.org/ns/editor-bookmarks/2" lastBookmarkId="0"/>
+    <open-files xmlns="http://www.netbeans.org/ns/projectui-open-files/2">
+        <group>
+            <file>file:/C:/Users/denis.LAPTOP-4LI8UQ4O/OneDrive/Документы/NetBeansProjects/ChatServerJ130_lesson4_group1/src/chatserverj130_lesson4_group1/ClientSocket.java</file>
+            <file>file:/C:/Users/denis.LAPTOP-4LI8UQ4O/OneDrive/Документы/NetBeansProjects/ChatServerJ130_lesson4_group1/src/chatserverj130_lesson4_group1/MainClass.java</file>
+        </group>
+    </open-files>
+</project-private>

java/samples/tcp/Chat/ChatServerJ130_lesson4_group1/nbproject/project.properties

@@ -0,0 +1,74 @@
+annotation.processing.enabled=true
+annotation.processing.enabled.in.editor=false
+annotation.processing.processor.options=
+annotation.processing.processors.list=
+annotation.processing.run.all.processors=true
+annotation.processing.source.output=${build.generated.sources.dir}/ap-source-output
+build.classes.dir=${build.dir}/classes
+build.classes.excludes=**/*.java,**/*.form
+# This directory is removed when the project is cleaned:
+build.dir=build
+build.generated.dir=${build.dir}/generated
+build.generated.sources.dir=${build.dir}/generated-sources
+# Only compile against the classpath explicitly listed here:
+build.sysclasspath=ignore
+build.test.classes.dir=${build.dir}/test/classes
+build.test.results.dir=${build.dir}/test/results
+# Uncomment to specify the preferred debugger connection transport:
+#debug.transport=dt_socket
+debug.classpath=\
+    ${run.classpath}
+debug.test.classpath=\
+    ${run.test.classpath}
+# \u0424\u0430\u0439\u043b\u044b \u0432 \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u0435 build.classes.dir, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f \u0438\u0441\u043a\u043b\u044e\u0447\u0438\u0442\u044c \u0438\u0437 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0430\u0440\u0445\u0438\u0432\u0430 jar
+dist.archive.excludes=
+# This directory is removed when the project is cleaned:
+dist.dir=dist
+dist.jar=${dist.dir}/ChatServerJ130_lesson4_group1.jar
+dist.javadoc.dir=${dist.dir}/javadoc
+excludes=
+includes=**
+jar.compress=false
+javac.classpath=
+# Space-separated list of extra javac options
+javac.compilerargs=
+javac.deprecation=false
+javac.external.vm=true
+javac.processorpath=\
+    ${javac.classpath}
+javac.source=1.8
+javac.target=1.8
+javac.test.classpath=\
+    ${javac.classpath}:\
+    ${build.classes.dir}
+javac.test.processorpath=\
+    ${javac.test.classpath}
+javadoc.additionalparam=
+javadoc.author=false
+javadoc.encoding=${source.encoding}
+javadoc.noindex=false
+javadoc.nonavbar=false
+javadoc.notree=false
+javadoc.private=false
+javadoc.splitindex=true
+javadoc.use=true
+javadoc.version=false
+javadoc.windowtitle=
+main.class=chatserverj130_lesson4_group1.MainClass
+manifest.file=manifest.mf
+meta.inf.dir=${src.dir}/META-INF
+mkdist.disabled=false
+platform.active=default_platform
+run.classpath=\
+    ${javac.classpath}:\
+    ${build.classes.dir}
+# Space-separated list of JVM arguments used when running the project.
+# You may also define separate properties like run-sys-prop.name=value instead of -Dname=value.
+# To set system properties for unit tests define test-sys-prop.name=value:
+run.jvmargs=
+run.test.classpath=\
+    ${javac.test.classpath}:\
+    ${build.test.classes.dir}
+source.encoding=UTF-8
+src.dir=src
+test.src.dir=test

java/samples/tcp/Chat/ChatServerJ130_lesson4_group1/nbproject/project.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://www.netbeans.org/ns/project/1">
+    <type>org.netbeans.modules.java.j2seproject</type>
+    <configuration>
+        <data xmlns="http://www.netbeans.org/ns/j2se-project/3">
+            <name>ChatServerJ130_lesson4_group1</name>
+            <source-roots>
+                <root id="src.dir"/>
+            </source-roots>
+            <test-roots>
+                <root id="test.src.dir"/>
+            </test-roots>
+        </data>
+    </configuration>
+</project>

java/samples/tcp/Chat/ChatServerJ130_lesson4_group1/src/chatserverj130_lesson4_group1/ClientSocket.java

@@ -0,0 +1,62 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package chatserverj130_lesson4_group1;
+
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.net.Socket;
+
+/**
+ *
+ * @author Denis
+ */
+public class ClientSocket {
+    
+    public void client(Socket socket){
+        try(//BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
+                InputStream is = socket.getInputStream();
+                OutputStream os = socket.getOutputStream();){
+            byte[] buffer = new byte[1024];
+            int length;
+            StringBuilder sb = new StringBuilder();
+            while((length=is.read(buffer))>-1){
+                sb.append(new String(buffer, 0, length));
+            }
+            String message = sb.toString();
+            //String message = reader.readLine();
+            socket.shutdownInput();
+            int type = typeMessage(message);
+            if(type==1) {
+                String history = MessageStore.getState().getAllMessage();
+                buffer = history.getBytes();
+                os.write(buffer);
+            }
+            if(type==2) {
+                message = message.replace("post", "").trim();
+                MessageStore.addMessage(message);
+                buffer = "OK".getBytes();
+                os.write(buffer);
+            }
+            if(type==9) {
+                buffer = "ERROR".getBytes();
+                os.write(buffer);
+            }
+        }catch(IOException ioe){}
+    }
+    
+    private int typeMessage(String message){
+        if(message!=null){
+            if(message.startsWith("get")) return 1;
+            if(message.startsWith("post")) return 2;
+        }
+        return 9;
+    }
+}

java/samples/tcp/Chat/ChatServerJ130_lesson4_group1/src/chatserverj130_lesson4_group1/MainClass.java

@@ -0,0 +1,25 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package chatserverj130_lesson4_group1;
+
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+
+/**
+ *
+ * @author Denis
+ */
+public class MainClass {
+
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String[] args) {
+        
+        PortListener.startListener();
+    }
+}

java/samples/tcp/Chat/ChatServerJ130_lesson4_group1/src/chatserverj130_lesson4_group1/Message.java

@@ -0,0 +1,85 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package chatserverj130_lesson4_group1;
+
+import java.util.Date;
+import java.util.Objects;
+
+/**
+ *
+ * @author Denis
+ */
+public class Message implements Comparable<Message>{
+    private String user;
+    private Date time;
+    private String text;
+
+    public String getUser() {
+        return user;
+    }
+
+    public Date getTime() {
+        return time;
+    }
+
+    public String getText() {
+        return text;
+    }
+
+    public void setUser(String user) {
+        this.user = user;
+    }
+
+    public void setTime(Date time) {
+        this.time = time;
+    }
+
+    public void setText(String text) {
+        this.text = text;
+    }
+    
+    
+
+    @Override
+    public int compareTo(Message o) {
+        return this.time.compareTo(o.time);
+    }
+
+    @Override
+    public int hashCode() {
+        int hash = 7;
+        hash = 11 * hash + Objects.hashCode(this.user);
+        hash = 11 * hash + Objects.hashCode(this.time);
+        hash = 11 * hash + Objects.hashCode(this.text);
+        return hash;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        final Message other = (Message) obj;
+        if (!Objects.equals(this.user, other.user)) {
+            return false;
+        }
+        if (!Objects.equals(this.text, other.text)) {
+            return false;
+        }
+        if (!Objects.equals(this.time, other.time)) {
+            return false;
+        }
+        return true;
+    }
+    
+    
+}

java/samples/tcp/Chat/ChatServerJ130_lesson4_group1/src/chatserverj130_lesson4_group1/MessageStore.java

@@ -0,0 +1,49 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package chatserverj130_lesson4_group1;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Set;
+import java.util.TreeSet;
+
+/**
+ *
+ * @author Denis
+ */
+public class MessageStore {
+    private static final MessageStore store = new MessageStore();
+    public Set<Message> mesages = new TreeSet<>();
+    
+    private MessageStore(){}
+    
+    public static MessageStore getState(){
+        return store;
+    }
+    
+    public static boolean addMessage(String text){
+        Message mesObj = new Message();
+        String[] mes = text.split(">>");
+        if(mes.length<3) return false;
+        mesObj.setUser(mes[0].replace("get", "").trim());
+        mesObj.setTime(new Date(System.currentTimeMillis()));
+        mesObj.setText(mes[2].trim());
+        store.mesages.add(mesObj);
+        return true;
+    }
+    
+    public String getAllMessage(){
+        SimpleDateFormat format = new SimpleDateFormat("yy.MM.dd hh:mm:ss");
+        StringBuilder sb = new StringBuilder();
+        mesages.forEach(message -> {
+            sb.append(message.getUser()).append(" >>> ")
+                    .append(format.format(message.getTime()))
+                    .append(" \n").append("\t")
+                    .append(message.getText()).append("\n");
+        });
+        return sb.toString();
+    }
+}

java/samples/tcp/Chat/ChatServerJ130_lesson4_group1/src/chatserverj130_lesson4_group1/PortListener.java

@@ -0,0 +1,57 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package chatserverj130_lesson4_group1;
+
+import java.io.IOException;
+import java.net.ServerSocket;
+import java.net.Socket;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ *
+ * @author Denis
+ */
+public final class PortListener implements Runnable{
+    
+    private static PortListener portListener;
+    private static boolean stop;
+    private Thread thread;
+    
+    private PortListener(){
+        stop = false;
+        thread = new Thread(portListener);
+    }
+    
+    public static PortListener getState(){
+        return portListener;
+    }
+    
+    public synchronized static void startListener(){
+        if(portListener==null) {
+            portListener = new PortListener();
+            portListener.thread = new Thread(portListener);
+            portListener.thread.start();
+        }
+        if(portListener.thread.getState().toString().equals("TERMINATED")){
+            portListener.thread = new Thread(portListener);
+            portListener.thread.start();
+        }
+    }
+
+    @Override
+    public void run() {
+        try (ServerSocket serverSocket = new ServerSocket(8092)) {
+            while(!stop){
+                Socket newSocket = serverSocket.accept();
+                new ClientSocket().client(newSocket);
+            }
+        } catch (IOException ex) {
+            Logger.getLogger(PortListener.class.getName()).log(Level.SEVERE, null, ex);
+        }
+        
+    }
+}

java/samples/tcp/Chat2/ChatClientJ130_lesson4_group2/build.xml

@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- You may freely edit this file. See commented blocks below for -->
+<!-- some examples of how to customize the build. -->
+<!-- (If you delete it and reopen the project it will be recreated.) -->
+<!-- By default, only the Clean and Build commands use this build script. -->
+<!-- Commands such as Run, Debug, and Test only use this build script if -->
+<!-- the Compile on Save feature is turned off for the project. -->
+<!-- You can turn off the Compile on Save (or Deploy on Save) setting -->
+<!-- in the project's Project Properties dialog box.-->
+<project name="ChatClientJ130_lesson4_group2" default="default" basedir=".">
+    <description>Builds, tests, and runs the project ChatClientJ130_lesson4_group2.</description>
+    <import file="nbproject/build-impl.xml"/>
+    <!--
+
+    There exist several targets which are by default empty and which can be 
+    used for execution of your tasks. These targets are usually executed 
+    before and after some main targets. They are: 
+
+      -pre-init:                 called before initialization of project properties
+      -post-init:                called after initialization of project properties
+      -pre-compile:              called before javac compilation
+      -post-compile:             called after javac compilation
+      -pre-compile-single:       called before javac compilation of single file
+      -post-compile-single:      called after javac compilation of single file
+      -pre-compile-test:         called before javac compilation of JUnit tests
+      -post-compile-test:        called after javac compilation of JUnit tests
+      -pre-compile-test-single:  called before javac compilation of single JUnit test
+      -post-compile-test-single: called after javac compilation of single JUunit test
+      -pre-jar:                  called before JAR building
+      -post-jar:                 called after JAR building
+      -post-clean:               called after cleaning build products
+
+    (Targets beginning with '-' are not intended to be called on their own.)
+
+    Example of inserting an obfuscator after compilation could look like this:
+
+        <target name="-post-compile">
+            <obfuscate>
+                <fileset dir="${build.classes.dir}"/>
+            </obfuscate>
+        </target>
+
+    For list of available properties check the imported 
+    nbproject/build-impl.xml file. 
+
+
+    Another way to customize the build is by overriding existing main targets.
+    The targets of interest are: 
+
+      -init-macrodef-javac:     defines macro for javac compilation
+      -init-macrodef-junit:     defines macro for junit execution
+      -init-macrodef-debug:     defines macro for class debugging
+      -init-macrodef-java:      defines macro for class execution
+      -do-jar:                  JAR building
+      run:                      execution of project 
+      -javadoc-build:           Javadoc generation
+      test-report:              JUnit report generation
+
+    An example of overriding the target for project execution could look like this:
+
+        <target name="run" depends="ChatClientJ130_lesson4_group2-impl.jar">
+            <exec dir="bin" executable="launcher.exe">
+                <arg file="${dist.jar}"/>
+            </exec>
+        </target>
+
+    Notice that the overridden target depends on the jar target and not only on 
+    the compile target as the regular run target does. Again, for a list of available 
+    properties which you can use, check the target you are overriding in the
+    nbproject/build-impl.xml file. 
+
+    -->
+</project>

java/samples/tcp/Chat2/ChatClientJ130_lesson4_group2/build/built-jar.properties

@@ -0,0 +1,4 @@
+#Fri, 27 Jan 2023 21:07:39 +0300
+
+
+C\:\\Users\\denis.LAPTOP-4LI8UQ4O\\OneDrive\\\u0414\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u044b\\NetBeansProjects\\ChatClientJ130_lesson4_group2=

java/samples/tcp/Chat2/ChatClientJ130_lesson4_group2/client.property

@@ -0,0 +1,2 @@
+#Fri Jan 27 20:09:17 MSK 2023
+username=Denis

java/samples/tcp/Chat2/ChatClientJ130_lesson4_group2/dist/README.TXT

@@ -0,0 +1,32 @@
+========================
+BUILD OUTPUT DESCRIPTION
+========================
+
+When you build an Java application project that has a main class, the IDE
+automatically copies all of the JAR
+files on the projects classpath to your projects dist/lib folder. The IDE
+also adds each of the JAR files to the Class-Path element in the application
+JAR files manifest file (MANIFEST.MF).
+
+To run the project from the command line, go to the dist folder and
+type the following:
+
+java -jar "ChatClientJ130_lesson4_group2.jar" 
+
+To distribute this project, zip up the dist folder (including the lib folder)
+and distribute the ZIP file.
+
+Notes:
+
+* If two JAR files on the project classpath have the same name, only the first
+JAR file is copied to the lib folder.
+* Only JAR files are copied to the lib folder.
+If the classpath contains other types of files or folders, these files (folders)
+are not copied.
+* If a library on the projects classpath also has a Class-Path element
+specified in the manifest,the content of the Class-Path element has to be on
+the projects runtime path.
+* To set a main class in a standard Java project, right-click the project node
+in the Projects window and choose Properties. Then click Run and enter the
+class name in the Main Class field. Alternatively, you can manually type the
+class name in the manifest Main-Class element.

java/samples/tcp/Chat2/ChatClientJ130_lesson4_group2/manifest.mf

@@ -0,0 +1,3 @@
+Manifest-Version: 1.0
+X-COMMENT: Main-Class will be added automatically by build
+

java/samples/tcp/Chat2/ChatClientJ130_lesson4_group2/nbproject/genfiles.properties

@@ -0,0 +1,8 @@
+build.xml.data.CRC32=19595f86
+build.xml.script.CRC32=2b14b91d
+build.xml.stylesheet.CRC32=8064a381@1.80.1.48
+# This file is used by a NetBeans-based IDE to track changes in generated files such as build-impl.xml.
+# Do not edit this file. You may delete it but then the IDE will never regenerate such files for you.
+nbproject/build-impl.xml.data.CRC32=19595f86
+nbproject/build-impl.xml.script.CRC32=eb95a494
+nbproject/build-impl.xml.stylesheet.CRC32=830a3534@1.80.1.48

java/samples/tcp/Chat2/ChatClientJ130_lesson4_group2/nbproject/private/private.properties

@@ -0,0 +1,2 @@
+compile.on.save=true
+user.properties.file=C:\\Users\\denis.LAPTOP-4LI8UQ4O\\AppData\\Roaming\\NetBeans\\8.2\\build.properties

java/samples/tcp/Chat2/ChatClientJ130_lesson4_group2/nbproject/project.properties

@@ -0,0 +1,74 @@
+annotation.processing.enabled=true
+annotation.processing.enabled.in.editor=false
+annotation.processing.processor.options=
+annotation.processing.processors.list=
+annotation.processing.run.all.processors=true
+annotation.processing.source.output=${build.generated.sources.dir}/ap-source-output
+build.classes.dir=${build.dir}/classes
+build.classes.excludes=**/*.java,**/*.form
+# This directory is removed when the project is cleaned:
+build.dir=build
+build.generated.dir=${build.dir}/generated
+build.generated.sources.dir=${build.dir}/generated-sources
+# Only compile against the classpath explicitly listed here:
+build.sysclasspath=ignore
+build.test.classes.dir=${build.dir}/test/classes
+build.test.results.dir=${build.dir}/test/results
+# Uncomment to specify the preferred debugger connection transport:
+#debug.transport=dt_socket
+debug.classpath=\
+    ${run.classpath}
+debug.test.classpath=\
+    ${run.test.classpath}
+# \u0424\u0430\u0439\u043b\u044b \u0432 \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u0435 build.classes.dir, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f \u0438\u0441\u043a\u043b\u044e\u0447\u0438\u0442\u044c \u0438\u0437 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0430\u0440\u0445\u0438\u0432\u0430 jar
+dist.archive.excludes=
+# This directory is removed when the project is cleaned:
+dist.dir=dist
+dist.jar=${dist.dir}/ChatClientJ130_lesson4_group2.jar
+dist.javadoc.dir=${dist.dir}/javadoc
+excludes=
+includes=**
+jar.compress=false
+javac.classpath=
+# Space-separated list of extra javac options
+javac.compilerargs=
+javac.deprecation=false
+javac.external.vm=true
+javac.processorpath=\
+    ${javac.classpath}
+javac.source=1.8
+javac.target=1.8
+javac.test.classpath=\
+    ${javac.classpath}:\
+    ${build.classes.dir}
+javac.test.processorpath=\
+    ${javac.test.classpath}
+javadoc.additionalparam=
+javadoc.author=false
+javadoc.encoding=${source.encoding}
+javadoc.noindex=false
+javadoc.nonavbar=false
+javadoc.notree=false
+javadoc.private=false
+javadoc.splitindex=true
+javadoc.use=true
+javadoc.version=false
+javadoc.windowtitle=
+main.class=chatclientj130_lesson4_group2.MainClass
+manifest.file=manifest.mf
+meta.inf.dir=${src.dir}/META-INF
+mkdist.disabled=false
+platform.active=default_platform
+run.classpath=\
+    ${javac.classpath}:\
+    ${build.classes.dir}
+# Space-separated list of JVM arguments used when running the project.
+# You may also define separate properties like run-sys-prop.name=value instead of -Dname=value.
+# To set system properties for unit tests define test-sys-prop.name=value:
+run.jvmargs=
+run.test.classpath=\
+    ${javac.test.classpath}:\
+    ${build.test.classes.dir}
+source.encoding=UTF-8
+src.dir=src
+test.src.dir=test

java/samples/tcp/Chat2/ChatClientJ130_lesson4_group2/nbproject/project.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://www.netbeans.org/ns/project/1">
+    <type>org.netbeans.modules.java.j2seproject</type>
+    <configuration>
+        <data xmlns="http://www.netbeans.org/ns/j2se-project/3">
+            <name>ChatClientJ130_lesson4_group2</name>
+            <source-roots>
+                <root id="src.dir"/>
+            </source-roots>
+            <test-roots>
+                <root id="test.src.dir"/>
+            </test-roots>
+        </data>
+    </configuration>
+</project>

java/samples/tcp/Chat2/ChatClientJ130_lesson4_group2/src/chatclientj130_lesson4_group2/ChatServer.java

@@ -0,0 +1,111 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package chatclientj130_lesson4_group2;
+
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.OutputStreamWriter;
+import java.net.Socket;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import javax.swing.JLabel;
+import javax.swing.JTextArea;
+
+/**
+ *
+ * @author Denis
+ */
+public class ChatServer implements Runnable{
+    
+    private static ChatServer chatServer;
+    private boolean isExit = false;
+    private JLabel topLabel;
+    private JTextArea chatingText;
+    
+    private ChatServer(JLabel topLabel, JTextArea chatingText){
+        this.chatingText = chatingText;
+        this.topLabel = topLabel;
+    }
+    
+    public static ChatServer getState(JLabel topLabel, JTextArea chatingText){
+        Thread thread = null;
+        if(chatServer==null) {
+            chatServer = new ChatServer(topLabel, chatingText);
+            thread = new Thread(chatServer);
+            thread.start();
+        }
+        if(thread!=null && thread.getState().toString().equals("TERMINATED")){
+            thread = new Thread(chatServer);
+            thread.start();
+        }
+        return chatServer;
+    }
+
+    @Override
+    public void run() {
+        while(!isExit){
+            updateChat();
+            try {Thread.sleep(1000);} catch (InterruptedException ex) {}
+        }
+    }
+    
+    private void updateChat(){
+        try (Socket socket = new Socket(ClientProperties.getState().getServerHost(), ClientProperties.getState().getServerPort());
+                BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
+                BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));){
+            String labelText = topLabel.getText();
+            if(socket.isConnected()) topLabel.setText("<html><font color='green'>" + labelText + "</font></html>");
+            writer.write("get messages" + "\n");
+            writer.flush();
+            StringBuilder sb = new StringBuilder();
+            String temp;
+            while((temp = reader.readLine())!=null){
+                sb.append(temp).append("\n");
+            }
+            chatingText.setText(sb.toString());
+        } catch (IOException ex) {
+            String labelText = topLabel.getText();
+            topLabel.setText("<html><font color='red'>" + labelText + "</font></html>");
+            Logger.getLogger(MainClass.class.getName()).log(Level.SEVERE, null, ex);
+        }
+    }
+    
+    public void sendMessage(String message){
+        String username = ClientProperties.getState().getUsername();
+        message = "post" + username + " >> " + getCurrentTime() + " >> " + message;
+        try (Socket socket = new Socket(ClientProperties.getState().getServerHost(), ClientProperties.getState().getServerPort());
+                BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
+                BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));){
+            String labelText = topLabel.getText();
+            if(socket.isConnected()) topLabel.setText("<html><font color='green'>" + labelText + "</font></html>");
+            writer.write(message + "\n");
+            writer.flush();
+            String answer = reader.readLine();
+            //chatingText.append(answer + System.lineSeparator());
+            reader.close();
+            writer.close();
+        } catch (IOException ex) {
+            String labelText = topLabel.getText();
+            topLabel.setText("<html><font color='red'>" + labelText + "</font></html>");
+            Logger.getLogger(MainClass.class.getName()).log(Level.SEVERE, null, ex);
+        }
+    }
+    
+    private String getCurrentTime(){
+        Date currentDate = new Date(System.currentTimeMillis());
+        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy:MM:dd hh:mm:ss");
+        String time = dateFormat.format(currentDate);
+        return time;
+    }
+    
+    public void exit(){
+        isExit = true;
+    }
+}

java/samples/tcp/Chat2/ChatClientJ130_lesson4_group2/src/chatclientj130_lesson4_group2/ClientFrame.java

@@ -0,0 +1,92 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package chatclientj130_lesson4_group2;
+
+import java.awt.BorderLayout;
+import java.awt.FlowLayout;
+import javax.swing.*; 
+
+/**
+ *
+ * @author Denis
+ */
+public class ClientFrame extends JFrame{
+    
+    private final JMenuBar menuBar;
+    private final JMenu menu;
+    private final JMenuItem itemExit;
+    private final JMenuItem itemServerHost;
+    private final JButton send;
+    private final JTextField messageText;
+    private final JTextArea chatingText;
+    private final JLabel topLabel;
+    
+    private String serverHost;
+    private int serverPort;
+    private String username;
+    
+    public ClientFrame(){
+        super("Chat client");
+        setSize(500, 700);
+        setDefaultCloseOperation(EXIT_ON_CLOSE);
+        getSettings();
+        setLayout(new BorderLayout());
+        topLabel = new JLabel(serverHost + ":" + serverPort + " >>> " + username);
+        
+        if(username==null) {
+            ClientProperties.getState().setUsername(JOptionPane.showInputDialog(this, "Введите имя пользователя"));
+            getSettings();
+            topLabel.setText(serverHost + ":" + serverPort + " >>> " + username);
+        }
+        
+        menuBar = new JMenuBar();
+        menu = new JMenu("File");
+        itemExit = new JMenuItem("Exit");
+        itemServerHost = new JMenuItem("Server settings");
+        setJMenuBar(menuBar);
+        menuBar.add(menu);
+        menu.add(itemExit);
+        menu.add(itemServerHost);
+        chatingText = new JTextArea();
+        messageText = new JTextField(" ");
+        send = new JButton("Send");
+        
+        add(topLabel, BorderLayout.NORTH);
+        chatingText.setEditable(false);
+        add(chatingText, BorderLayout.CENTER);
+        
+        messageText.setColumns(30);
+        
+        JPanel bottom = new JPanel(new FlowLayout());
+        bottom.add(messageText);
+        bottom.add(send);
+        
+        add(bottom, BorderLayout.SOUTH);
+        addListeners();
+        setLocationRelativeTo(null);
+        setVisible(true);
+    }
+    
+    private void addListeners(){
+        itemExit.addActionListener(e -> {
+            ChatServer.getState(topLabel, chatingText).exit();
+            dispose();
+        });
+        itemServerHost.addActionListener(e -> {
+            topLabel.setText(JOptionPane.showInputDialog(this, "Введите ip-адрес сервера"));
+        });
+        send.addActionListener(e -> {
+            String message = messageText.getText();
+            ChatServer.getState(topLabel, chatingText).sendMessage(message);
+        });
+    }
+    
+    private void getSettings(){
+        serverHost = ClientProperties.getState().getServerHost();
+        serverPort = ClientProperties.getState().getServerPort();
+        username = ClientProperties.getState().getUsername();
+    }
+}

java/samples/tcp/Chat2/ChatClientJ130_lesson4_group2/src/chatclientj130_lesson4_group2/ClientProperties.java

@@ -0,0 +1,73 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package chatclientj130_lesson4_group2;
+
+import java.io.File;
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.nio.file.Paths;
+import java.util.Properties;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ *
+ * @author Denis
+ */
+public class ClientProperties {
+    private final Properties properties;
+    private final static ClientProperties propertyState = new ClientProperties();
+    private final File propertyFile;
+    
+    private ClientProperties(){
+        properties = new Properties();
+        String path = Paths.get("").toAbsolutePath().toString() + File.separator + "client.property";
+        propertyFile = new File(path);
+        try {
+            if(!propertyFile.exists()){
+                propertyFile.createNewFile();
+            }
+        } catch (IOException ex) {
+            Logger.getLogger(ClientProperties.class.getName()).log(Level.SEVERE, null, ex);
+        }
+        
+    }
+    
+    public final static ClientProperties getState(){
+        return propertyState;
+    }
+    
+    public String getServerHost(){
+        try {properties.load(new FileReader(propertyFile));} catch (IOException ex) {}
+        return properties.getProperty("host", "188.134.85.87");
+    }
+    public int getServerPort(){
+        try {properties.load(new FileReader(propertyFile));} catch (IOException ex) {}
+        String port = properties.getProperty("port", "8092");
+        return port.matches("\\d+") ? Integer.valueOf(port) : 7007;
+    }
+    
+    public String getUsername(){
+        try {properties.load(new FileReader(propertyFile));} catch (IOException ex) {}
+        return properties.getProperty("username");
+    }
+    
+    public void setServerHost(String severHost){
+        properties.setProperty("host", severHost);
+        try {properties.store(new FileWriter(propertyFile), null);} catch (IOException ex) {}
+    }
+    
+    public void setServerPort(String severPort){
+        properties.setProperty("port", severPort);
+        try {properties.store(new FileWriter(propertyFile), null);} catch (IOException ex) {}
+    }
+    
+    public void setUsername(String username){
+        properties.setProperty("username", username);
+        try {properties.store(new FileWriter(propertyFile), null);} catch (IOException ex) {}
+    }
+}

java/samples/tcp/Chat2/ChatClientJ130_lesson4_group2/src/chatclientj130_lesson4_group2/MainClass.java

@@ -0,0 +1,21 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package chatclientj130_lesson4_group2;
+
+/**
+ *
+ * @author Denis
+ */
+public class MainClass {
+
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String[] args) {
+        new ClientFrame();
+    }
+    
+}

java/samples/tcp/Chat2/ChatServerJ130_lesson4_group2/build.xml

@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- You may freely edit this file. See commented blocks below for -->
+<!-- some examples of how to customize the build. -->
+<!-- (If you delete it and reopen the project it will be recreated.) -->
+<!-- By default, only the Clean and Build commands use this build script. -->
+<!-- Commands such as Run, Debug, and Test only use this build script if -->
+<!-- the Compile on Save feature is turned off for the project. -->
+<!-- You can turn off the Compile on Save (or Deploy on Save) setting -->
+<!-- in the project's Project Properties dialog box.-->
+<project name="ChatServerJ130_lesson4_group2" default="default" basedir=".">
+    <description>Builds, tests, and runs the project ChatServerJ130_lesson4_group2.</description>
+    <import file="nbproject/build-impl.xml"/>
+    <!--
+
+    There exist several targets which are by default empty and which can be 
+    used for execution of your tasks. These targets are usually executed 
+    before and after some main targets. They are: 
+
+      -pre-init:                 called before initialization of project properties
+      -post-init:                called after initialization of project properties
+      -pre-compile:              called before javac compilation
+      -post-compile:             called after javac compilation
+      -pre-compile-single:       called before javac compilation of single file
+      -post-compile-single:      called after javac compilation of single file
+      -pre-compile-test:         called before javac compilation of JUnit tests
+      -post-compile-test:        called after javac compilation of JUnit tests
+      -pre-compile-test-single:  called before javac compilation of single JUnit test
+      -post-compile-test-single: called after javac compilation of single JUunit test
+      -pre-jar:                  called before JAR building
+      -post-jar:                 called after JAR building
+      -post-clean:               called after cleaning build products
+
+    (Targets beginning with '-' are not intended to be called on their own.)
+
+    Example of inserting an obfuscator after compilation could look like this:
+
+        <target name="-post-compile">
+            <obfuscate>
+                <fileset dir="${build.classes.dir}"/>
+            </obfuscate>
+        </target>
+
+    For list of available properties check the imported 
+    nbproject/build-impl.xml file. 
+
+
+    Another way to customize the build is by overriding existing main targets.
+    The targets of interest are: 
+
+      -init-macrodef-javac:     defines macro for javac compilation
+      -init-macrodef-junit:     defines macro for junit execution
+      -init-macrodef-debug:     defines macro for class debugging
+      -init-macrodef-java:      defines macro for class execution
+      -do-jar:                  JAR building
+      run:                      execution of project 
+      -javadoc-build:           Javadoc generation
+      test-report:              JUnit report generation
+
+    An example of overriding the target for project execution could look like this:
+
+        <target name="run" depends="ChatServerJ130_lesson4_group2-impl.jar">
+            <exec dir="bin" executable="launcher.exe">
+                <arg file="${dist.jar}"/>
+            </exec>
+        </target>
+
+    Notice that the overridden target depends on the jar target and not only on 
+    the compile target as the regular run target does. Again, for a list of available 
+    properties which you can use, check the target you are overriding in the
+    nbproject/build-impl.xml file. 
+
+    -->
+</project>

java/samples/tcp/Chat2/ChatServerJ130_lesson4_group2/build/built-jar.properties

@@ -0,0 +1,4 @@
+#Fri, 27 Jan 2023 20:58:17 +0300
+
+
+C\:\\Users\\denis.LAPTOP-4LI8UQ4O\\OneDrive\\\u0414\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u044b\\NetBeansProjects\\ChatServerJ130_lesson4_group2=

java/samples/tcp/Chat2/ChatServerJ130_lesson4_group2/dist/README.TXT

@@ -0,0 +1,32 @@
+========================
+BUILD OUTPUT DESCRIPTION
+========================
+
+When you build an Java application project that has a main class, the IDE
+automatically copies all of the JAR
+files on the projects classpath to your projects dist/lib folder. The IDE
+also adds each of the JAR files to the Class-Path element in the application
+JAR files manifest file (MANIFEST.MF).
+
+To run the project from the command line, go to the dist folder and
+type the following:
+
+java -jar "ChatServerJ130_lesson4_group2.jar" 
+
+To distribute this project, zip up the dist folder (including the lib folder)
+and distribute the ZIP file.
+
+Notes:
+
+* If two JAR files on the project classpath have the same name, only the first
+JAR file is copied to the lib folder.
+* Only JAR files are copied to the lib folder.
+If the classpath contains other types of files or folders, these files (folders)
+are not copied.
+* If a library on the projects classpath also has a Class-Path element
+specified in the manifest,the content of the Class-Path element has to be on
+the projects runtime path.
+* To set a main class in a standard Java project, right-click the project node
+in the Projects window and choose Properties. Then click Run and enter the
+class name in the Main Class field. Alternatively, you can manually type the
+class name in the manifest Main-Class element.

java/samples/tcp/Chat2/ChatServerJ130_lesson4_group2/manifest.mf

@@ -0,0 +1,3 @@
+Manifest-Version: 1.0
+X-COMMENT: Main-Class will be added automatically by build
+

java/samples/tcp/Chat2/ChatServerJ130_lesson4_group2/nbproject/genfiles.properties

@@ -0,0 +1,8 @@
+build.xml.data.CRC32=dacebf8a
+build.xml.script.CRC32=78491380
+build.xml.stylesheet.CRC32=8064a381@1.80.1.48
+# This file is used by a NetBeans-based IDE to track changes in generated files such as build-impl.xml.
+# Do not edit this file. You may delete it but then the IDE will never regenerate such files for you.
+nbproject/build-impl.xml.data.CRC32=dacebf8a
+nbproject/build-impl.xml.script.CRC32=d1670449
+nbproject/build-impl.xml.stylesheet.CRC32=830a3534@1.80.1.48

java/samples/tcp/Chat2/ChatServerJ130_lesson4_group2/nbproject/private/private.properties

@@ -0,0 +1,2 @@
+compile.on.save=true
+user.properties.file=C:\\Users\\denis.LAPTOP-4LI8UQ4O\\AppData\\Roaming\\NetBeans\\8.2\\build.properties

java/samples/tcp/Chat2/ChatServerJ130_lesson4_group2/nbproject/project.properties

@@ -0,0 +1,74 @@
+annotation.processing.enabled=true
+annotation.processing.enabled.in.editor=false
+annotation.processing.processor.options=
+annotation.processing.processors.list=
+annotation.processing.run.all.processors=true
+annotation.processing.source.output=${build.generated.sources.dir}/ap-source-output
+build.classes.dir=${build.dir}/classes
+build.classes.excludes=**/*.java,**/*.form
+# This directory is removed when the project is cleaned:
+build.dir=build
+build.generated.dir=${build.dir}/generated
+build.generated.sources.dir=${build.dir}/generated-sources
+# Only compile against the classpath explicitly listed here:
+build.sysclasspath=ignore
+build.test.classes.dir=${build.dir}/test/classes
+build.test.results.dir=${build.dir}/test/results
+# Uncomment to specify the preferred debugger connection transport:
+#debug.transport=dt_socket
+debug.classpath=\
+    ${run.classpath}
+debug.test.classpath=\
+    ${run.test.classpath}
+# \u0424\u0430\u0439\u043b\u044b \u0432 \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u0435 build.classes.dir, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f \u0438\u0441\u043a\u043b\u044e\u0447\u0438\u0442\u044c \u0438\u0437 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0430\u0440\u0445\u0438\u0432\u0430 jar
+dist.archive.excludes=
+# This directory is removed when the project is cleaned:
+dist.dir=dist
+dist.jar=${dist.dir}/ChatServerJ130_lesson4_group2.jar
+dist.javadoc.dir=${dist.dir}/javadoc
+excludes=
+includes=**
+jar.compress=false
+javac.classpath=
+# Space-separated list of extra javac options
+javac.compilerargs=
+javac.deprecation=false
+javac.external.vm=true
+javac.processorpath=\
+    ${javac.classpath}
+javac.source=1.8
+javac.target=1.8
+javac.test.classpath=\
+    ${javac.classpath}:\
+    ${build.classes.dir}
+javac.test.processorpath=\
+    ${javac.test.classpath}
+javadoc.additionalparam=
+javadoc.author=false
+javadoc.encoding=${source.encoding}
+javadoc.noindex=false
+javadoc.nonavbar=false
+javadoc.notree=false
+javadoc.private=false
+javadoc.splitindex=true
+javadoc.use=true
+javadoc.version=false
+javadoc.windowtitle=
+main.class=chatserverj130_lesson4_group2.MainClass
+manifest.file=manifest.mf
+meta.inf.dir=${src.dir}/META-INF
+mkdist.disabled=false
+platform.active=default_platform
+run.classpath=\
+    ${javac.classpath}:\
+    ${build.classes.dir}
+# Space-separated list of JVM arguments used when running the project.
+# You may also define separate properties like run-sys-prop.name=value instead of -Dname=value.
+# To set system properties for unit tests define test-sys-prop.name=value:
+run.jvmargs=
+run.test.classpath=\
+    ${javac.test.classpath}:\
+    ${build.test.classes.dir}
+source.encoding=UTF-8
+src.dir=src
+test.src.dir=test

java/samples/tcp/Chat2/ChatServerJ130_lesson4_group2/nbproject/project.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://www.netbeans.org/ns/project/1">
+    <type>org.netbeans.modules.java.j2seproject</type>
+    <configuration>
+        <data xmlns="http://www.netbeans.org/ns/j2se-project/3">
+            <name>ChatServerJ130_lesson4_group2</name>
+            <source-roots>
+                <root id="src.dir"/>
+            </source-roots>
+            <test-roots>
+                <root id="test.src.dir"/>
+            </test-roots>
+        </data>
+    </configuration>
+</project>

java/samples/tcp/Chat2/ChatServerJ130_lesson4_group2/src/chatserverj130_lesson4_group2/ClientSocket.java

@@ -0,0 +1,42 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package chatserverj130_lesson4_group2;
+
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.OutputStreamWriter;
+import java.net.Socket;
+
+/**
+ *
+ * @author Denis
+ */
+public class ClientSocket {
+    
+    public void client(Socket socket){
+        try(BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
+        BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));){
+            String message = reader.readLine();
+            int type = typeMessage(message);
+            if(type==1) writer.write(MessageStore.getState().getAllMessage());
+            if(type==2) {
+                message = message.replace("post", "").trim();
+                MessageStore.addMessage(message);
+                writer.write("OK");
+            }
+            if(type==9) writer.write("ERROR");
+            writer.flush();
+        }catch(IOException ioe){}
+    }
+    
+    private int typeMessage(String message){
+        if(message.startsWith("get")) return 1;
+        if(message.startsWith("post")) return 2;
+        return 9;
+    }
+}

java/samples/tcp/Chat2/ChatServerJ130_lesson4_group2/src/chatserverj130_lesson4_group2/MainClass.java

@@ -0,0 +1,34 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package chatserverj130_lesson4_group2;
+
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+
+/**
+ *
+ * @author Denis
+ */
+public class MainClass {
+
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String[] args) {
+        
+//        PortListener listener = PortListener.getState();
+//        Thread thread = new Thread(listener);
+//        thread.start();
+        PortListener.startListener();
+        try {
+            Thread.sleep(3000);
+        } catch (InterruptedException ex) {
+            Logger.getLogger(MainClass.class.getName()).log(Level.SEVERE, null, ex);
+        }
+        PortListener.startListener();
+    }
+}

java/samples/tcp/Chat2/ChatServerJ130_lesson4_group2/src/chatserverj130_lesson4_group2/Message.java

@@ -0,0 +1,85 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package chatserverj130_lesson4_group2;
+
+import java.util.Date;
+import java.util.Objects;
+
+/**
+ *
+ * @author Denis
+ */
+public class Message implements Comparable<Message>{
+    private String user;
+    private Date time;
+    private String text;
+
+    public String getUser() {
+        return user;
+    }
+
+    public Date getTime() {
+        return time;
+    }
+
+    public String getText() {
+        return text;
+    }
+
+    public void setUser(String user) {
+        this.user = user;
+    }
+
+    public void setTime(Date time) {
+        this.time = time;
+    }
+
+    public void setText(String text) {
+        this.text = text;
+    }
+    
+    
+
+    @Override
+    public int compareTo(Message o) {
+        return this.time.compareTo(o.time);
+    }
+
+    @Override
+    public int hashCode() {
+        int hash = 7;
+        hash = 11 * hash + Objects.hashCode(this.user);
+        hash = 11 * hash + Objects.hashCode(this.time);
+        hash = 11 * hash + Objects.hashCode(this.text);
+        return hash;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        final Message other = (Message) obj;
+        if (!Objects.equals(this.user, other.user)) {
+            return false;
+        }
+        if (!Objects.equals(this.text, other.text)) {
+            return false;
+        }
+        if (!Objects.equals(this.time, other.time)) {
+            return false;
+        }
+        return true;
+    }
+    
+    
+}

java/samples/tcp/Chat2/ChatServerJ130_lesson4_group2/src/chatserverj130_lesson4_group2/MessageStore.java

@@ -0,0 +1,48 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package chatserverj130_lesson4_group2;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Set;
+import java.util.TreeSet;
+
+/**
+ *
+ * @author Denis
+ */
+public class MessageStore {
+    private static final MessageStore store = new MessageStore();
+    public Set<Message> mesages = new TreeSet<>();
+    
+    private MessageStore(){}
+    
+    public static MessageStore getState(){
+        return store;
+    }
+    
+    public static boolean addMessage(String text){
+        Message mesObj = new Message();
+        String[] mes = text.split(">>");
+        if(mes.length<3) return false;
+        mesObj.setUser(mes[0].replace("get", "").trim());
+        mesObj.setTime(new Date(System.currentTimeMillis()));
+        mesObj.setText(mes[2].trim());
+        store.mesages.add(mesObj);
+        return true;
+    }
+    
+    public String getAllMessage(){
+        SimpleDateFormat format = new SimpleDateFormat("yy.MM.dd HH:mm:ss");
+        StringBuilder sb = new StringBuilder();
+        mesages.forEach(message -> {
+            sb.append(message.getUser()).append(" >>> ")
+                    .append(format.format(message.getTime())).append(" >>> \n\t")
+                    .append(message.getText()).append("\n");
+        });
+        return sb.toString();
+    }
+}

java/samples/tcp/Chat2/ChatServerJ130_lesson4_group2/src/chatserverj130_lesson4_group2/PortListener.java

@@ -0,0 +1,52 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package chatserverj130_lesson4_group2;
+
+import java.io.IOException;
+import java.net.ServerSocket;
+import java.net.Socket;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ *
+ * @author Denis
+ */
+public final class PortListener implements Runnable{
+    
+    private static PortListener portListener;
+    private static boolean stop;
+    private Thread thread;
+    
+    private PortListener(){
+        stop = false;
+        thread = new Thread(portListener);
+    }
+    
+    public synchronized final static void startListener(){
+        if(portListener==null) {
+            portListener = new PortListener();
+            portListener.thread = new Thread(portListener);
+            portListener.thread.start();
+        }
+        if(portListener.thread.getState().toString().equals("TERMINATED")){
+            portListener.thread = new Thread(portListener);
+            portListener.thread.start();
+        }
+    }
+
+    @Override
+    public void run() {
+        try (ServerSocket serverSocket = new ServerSocket(8092)) {
+            while(!stop){
+                Socket newSocket = serverSocket.accept();
+                new ClientSocket().client(newSocket);
+            }
+        } catch (IOException ex) {
+            Logger.getLogger(PortListener.class.getName()).log(Level.SEVERE, null, ex);
+        }
+    }
+}

java/samples/tcp/NetworkTransfer/NetworkTransferClient/build.xml

@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- You may freely edit this file. See commented blocks below for -->
+<!-- some examples of how to customize the build. -->
+<!-- (If you delete it and reopen the project it will be recreated.) -->
+<!-- By default, only the Clean and Build commands use this build script. -->
+<!-- Commands such as Run, Debug, and Test only use this build script if -->
+<!-- the Compile on Save feature is turned off for the project. -->
+<!-- You can turn off the Compile on Save (or Deploy on Save) setting -->
+<!-- in the project's Project Properties dialog box.-->
+<project name="NetworkTransferClient" default="default" basedir=".">
+    <description>Builds, tests, and runs the project NetworkTransferClient.</description>
+    <import file="nbproject/build-impl.xml"/>
+    <!--
+
+    There exist several targets which are by default empty and which can be 
+    used for execution of your tasks. These targets are usually executed 
+    before and after some main targets. They are: 
+
+      -pre-init:                 called before initialization of project properties
+      -post-init:                called after initialization of project properties
+      -pre-compile:              called before javac compilation
+      -post-compile:             called after javac compilation
+      -pre-compile-single:       called before javac compilation of single file
+      -post-compile-single:      called after javac compilation of single file
+      -pre-compile-test:         called before javac compilation of JUnit tests
+      -post-compile-test:        called after javac compilation of JUnit tests
+      -pre-compile-test-single:  called before javac compilation of single JUnit test
+      -post-compile-test-single: called after javac compilation of single JUunit test
+      -pre-jar:                  called before JAR building
+      -post-jar:                 called after JAR building
+      -post-clean:               called after cleaning build products
+
+    (Targets beginning with '-' are not intended to be called on their own.)
+
+    Example of inserting an obfuscator after compilation could look like this:
+
+        <target name="-post-compile">
+            <obfuscate>
+                <fileset dir="${build.classes.dir}"/>
+            </obfuscate>
+        </target>
+
+    For list of available properties check the imported 
+    nbproject/build-impl.xml file. 
+
+
+    Another way to customize the build is by overriding existing main targets.
+    The targets of interest are: 
+
+      -init-macrodef-javac:     defines macro for javac compilation
+      -init-macrodef-junit:     defines macro for junit execution
+      -init-macrodef-debug:     defines macro for class debugging
+      -init-macrodef-java:      defines macro for class execution
+      -do-jar:                  JAR building
+      run:                      execution of project 
+      -javadoc-build:           Javadoc generation
+      test-report:              JUnit report generation
+
+    An example of overriding the target for project execution could look like this:
+
+        <target name="run" depends="NetworkTransferClient-impl.jar">
+            <exec dir="bin" executable="launcher.exe">
+                <arg file="${dist.jar}"/>
+            </exec>
+        </target>
+
+    Notice that the overridden target depends on the jar target and not only on 
+    the compile target as the regular run target does. Again, for a list of available 
+    properties which you can use, check the target you are overriding in the
+    nbproject/build-impl.xml file. 
+
+    -->
+</project>

java/samples/tcp/NetworkTransfer/NetworkTransferClient/manifest.mf

@@ -0,0 +1,3 @@
+Manifest-Version: 1.0
+X-COMMENT: Main-Class will be added automatically by build
+

java/samples/tcp/NetworkTransfer/NetworkTransferClient/nbproject/genfiles.properties

@@ -0,0 +1,8 @@
+build.xml.data.CRC32=29cf46d3
+build.xml.script.CRC32=b109d07b
+build.xml.stylesheet.CRC32=8064a381@1.80.1.48
+# This file is used by a NetBeans-based IDE to track changes in generated files such as build-impl.xml.
+# Do not edit this file. You may delete it but then the IDE will never regenerate such files for you.
+nbproject/build-impl.xml.data.CRC32=29cf46d3
+nbproject/build-impl.xml.script.CRC32=bd8087d6
+nbproject/build-impl.xml.stylesheet.CRC32=830a3534@1.80.1.48

java/samples/tcp/NetworkTransfer/NetworkTransferClient/nbproject/private/private.properties

@@ -0,0 +1,2 @@
+compile.on.save=true
+user.properties.file=C:\\Users\\denis.LAPTOP-4LI8UQ4O\\AppData\\Roaming\\NetBeans\\8.2\\build.properties

java/samples/tcp/NetworkTransfer/NetworkTransferClient/nbproject/project.properties

@@ -0,0 +1,74 @@
+annotation.processing.enabled=true
+annotation.processing.enabled.in.editor=false
+annotation.processing.processor.options=
+annotation.processing.processors.list=
+annotation.processing.run.all.processors=true
+annotation.processing.source.output=${build.generated.sources.dir}/ap-source-output
+build.classes.dir=${build.dir}/classes
+build.classes.excludes=**/*.java,**/*.form
+# This directory is removed when the project is cleaned:
+build.dir=build
+build.generated.dir=${build.dir}/generated
+build.generated.sources.dir=${build.dir}/generated-sources
+# Only compile against the classpath explicitly listed here:
+build.sysclasspath=ignore
+build.test.classes.dir=${build.dir}/test/classes
+build.test.results.dir=${build.dir}/test/results
+# Uncomment to specify the preferred debugger connection transport:
+#debug.transport=dt_socket
+debug.classpath=\
+    ${run.classpath}
+debug.test.classpath=\
+    ${run.test.classpath}
+# \u0424\u0430\u0439\u043b\u044b \u0432 \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u0435 build.classes.dir, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f \u0438\u0441\u043a\u043b\u044e\u0447\u0438\u0442\u044c \u0438\u0437 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0430\u0440\u0445\u0438\u0432\u0430 jar
+dist.archive.excludes=
+# This directory is removed when the project is cleaned:
+dist.dir=dist
+dist.jar=${dist.dir}/NetworkTransferClient.jar
+dist.javadoc.dir=${dist.dir}/javadoc
+excludes=
+includes=**
+jar.compress=false
+javac.classpath=
+# Space-separated list of extra javac options
+javac.compilerargs=
+javac.deprecation=false
+javac.external.vm=true
+javac.processorpath=\
+    ${javac.classpath}
+javac.source=1.8
+javac.target=1.8
+javac.test.classpath=\
+    ${javac.classpath}:\
+    ${build.classes.dir}
+javac.test.processorpath=\
+    ${javac.test.classpath}
+javadoc.additionalparam=
+javadoc.author=false
+javadoc.encoding=${source.encoding}
+javadoc.noindex=false
+javadoc.nonavbar=false
+javadoc.notree=false
+javadoc.private=false
+javadoc.splitindex=true
+javadoc.use=true
+javadoc.version=false
+javadoc.windowtitle=
+main.class=networktransferclient.NetworkTransferClient
+manifest.file=manifest.mf
+meta.inf.dir=${src.dir}/META-INF
+mkdist.disabled=false
+platform.active=default_platform
+run.classpath=\
+    ${javac.classpath}:\
+    ${build.classes.dir}
+# Space-separated list of JVM arguments used when running the project.
+# You may also define separate properties like run-sys-prop.name=value instead of -Dname=value.
+# To set system properties for unit tests define test-sys-prop.name=value:
+run.jvmargs=
+run.test.classpath=\
+    ${javac.test.classpath}:\
+    ${build.test.classes.dir}
+source.encoding=UTF-8
+src.dir=src
+test.src.dir=test

java/samples/tcp/NetworkTransfer/NetworkTransferClient/nbproject/project.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://www.netbeans.org/ns/project/1">
+    <type>org.netbeans.modules.java.j2seproject</type>
+    <configuration>
+        <data xmlns="http://www.netbeans.org/ns/j2se-project/3">
+            <name>NetworkTransferClient</name>
+            <source-roots>
+                <root id="src.dir"/>
+            </source-roots>
+            <test-roots>
+                <root id="test.src.dir"/>
+            </test-roots>
+        </data>
+    </configuration>
+</project>

java/samples/tcp/NetworkTransfer/NetworkTransferClient/src/networktransferclient/NetworkTransferClient.java

@@ -0,0 +1,52 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package networktransferclient;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedReader;
+import java.io.DataOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.net.Socket;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ *
+ * @author denis
+ */
+public class NetworkTransferClient {
+
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String[] args) {
+        try (   Socket socket = new Socket("127.0.0.1", 15001);
+                DataOutputStream dataOutputStream = new DataOutputStream(socket.getOutputStream());
+                BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));){
+            
+            File file = new File("j130-lab2.pdf");
+            if(file.exists()) {
+                dataOutputStream.writeUTF(file.getName());
+                byte[] buffer = new byte[1024];
+                try(FileInputStream fis = new FileInputStream(file)){
+                    int length;
+                    while((length=fis.read(buffer))>-1){
+                        dataOutputStream.write(buffer, 0, length);
+                    }
+                }
+                socket.shutdownOutput();
+                String msg = reader.readLine();
+                System.out.println("Получен ответ от сервера: " + msg);
+            }
+        } catch (IOException ex) {
+            Logger.getLogger(NetworkTransferClient.class.getName()).log(Level.SEVERE, null, ex);
+        }
+    }
+    
+}

java/samples/tcp/NetworkTransfer/NetworkTransferServer/build.xml

@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- You may freely edit this file. See commented blocks below for -->
+<!-- some examples of how to customize the build. -->
+<!-- (If you delete it and reopen the project it will be recreated.) -->
+<!-- By default, only the Clean and Build commands use this build script. -->
+<!-- Commands such as Run, Debug, and Test only use this build script if -->
+<!-- the Compile on Save feature is turned off for the project. -->
+<!-- You can turn off the Compile on Save (or Deploy on Save) setting -->
+<!-- in the project's Project Properties dialog box.-->
+<project name="NetworkTransferServer" default="default" basedir=".">
+    <description>Builds, tests, and runs the project NetworkTransferServer.</description>
+    <import file="nbproject/build-impl.xml"/>
+    <!--
+
+    There exist several targets which are by default empty and which can be 
+    used for execution of your tasks. These targets are usually executed 
+    before and after some main targets. They are: 
+
+      -pre-init:                 called before initialization of project properties
+      -post-init:                called after initialization of project properties
+      -pre-compile:              called before javac compilation
+      -post-compile:             called after javac compilation
+      -pre-compile-single:       called before javac compilation of single file
+      -post-compile-single:      called after javac compilation of single file
+      -pre-compile-test:         called before javac compilation of JUnit tests
+      -post-compile-test:        called after javac compilation of JUnit tests
+      -pre-compile-test-single:  called before javac compilation of single JUnit test
+      -post-compile-test-single: called after javac compilation of single JUunit test
+      -pre-jar:                  called before JAR building
+      -post-jar:                 called after JAR building
+      -post-clean:               called after cleaning build products
+
+    (Targets beginning with '-' are not intended to be called on their own.)
+
+    Example of inserting an obfuscator after compilation could look like this:
+
+        <target name="-post-compile">
+            <obfuscate>
+                <fileset dir="${build.classes.dir}"/>
+            </obfuscate>
+        </target>
+
+    For list of available properties check the imported 
+    nbproject/build-impl.xml file. 
+
+
+    Another way to customize the build is by overriding existing main targets.
+    The targets of interest are: 
+
+      -init-macrodef-javac:     defines macro for javac compilation
+      -init-macrodef-junit:     defines macro for junit execution
+      -init-macrodef-debug:     defines macro for class debugging
+      -init-macrodef-java:      defines macro for class execution
+      -do-jar:                  JAR building
+      run:                      execution of project 
+      -javadoc-build:           Javadoc generation
+      test-report:              JUnit report generation
+
+    An example of overriding the target for project execution could look like this:
+
+        <target name="run" depends="NetworkTransferServer-impl.jar">
+            <exec dir="bin" executable="launcher.exe">
+                <arg file="${dist.jar}"/>
+            </exec>
+        </target>
+
+    Notice that the overridden target depends on the jar target and not only on 
+    the compile target as the regular run target does. Again, for a list of available 
+    properties which you can use, check the target you are overriding in the
+    nbproject/build-impl.xml file. 
+
+    -->
+</project>