Person + Address, hash code

Address.java

package lesson7.hashcodeoverriding;

public class Address {

    private String city;
    private String street;
    private int house;

    public Address() {
    }

    @Override
    public int hashCode() {

        final int prime = 7;
        int c = city.hashCode();
        int result = 37;
        result = prime * result + c;

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

        c = street.hashCode();
        result = prime * result + c;

        return result;
    }

    @Override
    public boolean equals(Object obj) {

        if (obj != null && obj instanceof Address) {
            Address adr = (Address) obj;
            return city.equals(adr.getCity()) && street.equals(adr.getStreet()) && house == adr.getHouse();
        }
        return false;
    }

    public String getCity() {
        return city;
    }

    public void setCity(String city) {
        this.city = city;
    }

    public String getStreet() {
        return street;
    }

    public void setStreet(String street) {
        this.street = street;
    }

    public int getHouse() {
        return house;
    }

    public void setHouse(int house) {
        this.house = house;
    }
}

Launcher2.java

package lesson7.hashcodeoverriding;


public class Launcher2 {

    public static void main(String[] args) {

        Person2 p1 = new Person2();
        Person2 p2 = new Person2();
        Address ad1 = new Address();
        Address ad2 = new Address();

        p1.setName("Ivan");
        p1.setAge(22);
        p1.setSalary(20);
        ad1.setCity("Kyiv");
        ad1.setStreet("Horkoho");
        ad1.setHouse(1);
        p1.setAddress(ad1);

        p2.setName("erw");
        p2.setAge(22);
        p2.setSalary(20);
        ad2.setCity("Kyiv");
        ad2.setStreet("Horkoho");
        ad2.setHouse(2);
        p2.setAddress(ad2);

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

        p1 = p2;

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

Person2.java

package lesson7.hashcodeoverriding;


public class Person2 {

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

    public Person2() {
    }

    @Override
    public int hashCode() {

        final int prime = 7;
        int c = name.hashCode();
        int result = 37;
        result = prime * result + c;

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

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

        c = address.hashCode();
        result = prime * result + c;

        return result;
    }

    @Override
    public boolean equals(Object obj) {

        Person2 person = (Person2) obj;
        return getName().equals(person.getName()) && (getAge() == person.getAge()) && (getSalary() == person.getSalary())
                && getAddress().equals(person.getAddress());
    }

    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;
    }

    public Address getAddress() {
        return address;
    }

    public void setAddress(Address address) {
        this.address = address;
    }
}