hello/java/samples/collections/Person.java

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package collectionexample;

import java.util.Objects;

/**
 *
 * @author denis
 */
public class Person implements Comparable<Person>{
    
    public String name;
    public Integer phone;

    public Person(String name, Integer phone) {
        this.name = name;
        this.phone = phone;
    }

    @Override
    public String toString() {
        return "Person{" + "name=" + name + ", phone=" + phone + '}';
    }

    @Override
    public int hashCode() {
        int hash = 3;
        hash = 37 * hash + Objects.hashCode(this.name);
        hash = 37 * hash + Objects.hashCode(this.phone);
        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 Person other = (Person) obj;
        if (!Objects.equals(this.name, other.name)) {
            return false;
        }
        if (!Objects.equals(this.phone, other.phone)) {
            return false;
        }
        if (!Objects.equals(this.hashCode(), other.hashCode())) {
            return false;
        }
        return true;
    }

    @Override
    public int compareTo(Person person) {
        int res = this.name.compareTo(person.name);
        if(res==0) res = this.phone.compareTo(person.phone);
        return res;
    }
    
    
}