overriding hashcode() and equals()

Launcher.java

package lesson7.hashcodeoverriding;

public class Launcher {

    public static void main(String[] args) {

        Person p1 = new Person();
        Person p2 = new Person();

        p1.setName("Ivan");
        p1.setAge(22);
        p1.setSalary(2222);

        p2.setName("erw");
        p2.setAge(22);
        p2.setSalary(2222);

        System.out.println(p1.hashCode());
        System.out.println(p2.hashCode());
        System.out.println(p1.equals(p2));
        System.out.println(p2.equals(p1));

        p2.setName("Ivan");

        System.out.println(p1.hashCode());
        System.out.println(p2.hashCode());
        System.out.println(p1.equals(p2));
        System.out.println(p2.equals(p1));
    }
}

Person.java

package lesson7.hashcodeoverriding;


public class Person {

    private String name;
    private int age;
    private long salary;

    public Person() {
    }

    @Override
    public int hashCode() {

        final int prime = 8;
        int c = name.hashCode();
        int result = 1;
        result = prime * result + c;

        c = ((Integer)age).hashCode();
        result = prime * result + c;

        c = ((Long)salary).hashCode();
        result = prime * result + c;

        return result;
    }

    @Override
    public boolean equals(Object obj) {

        Person person = (Person) obj;
        return getName().equals(person.getName()) && (getAge() == person.getAge()) && (getSalary() == person.getSalary());
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public long getSalary() {
        return salary;
    }

    public void setSalary(long salary) {
        this.salary = salary;
    }
}