EqualsTest.java

package equals;

/**
 * This program demonstrates the equals method.
 *
 * @author Cay Horstmann
 * @version 1.12 2012-01-26
 */
public class EqualsTest {
    public static void main(String[] args) {
        Employee alice1 = new Employee("Alice Adams", 75000, 1987, 12, 15);
        Employee alice2 = alice1;
        Employee alice3 = new Employee("Alice Adams", 75000, 1987, 12, 15);
        Employee bob = new Employee("Bob Brandson", 50000, 1989, 10, 1);

        System.out.println("alice1 == alice2: " + (alice1 == alice2));
        System.out.println("alice1 == alice3: " + (alice1 == alice3));
        System.out.println("alice1.equals(alice3): " + alice1.equals(alice3));
        System.out.println("alice1.equals(bob): " + alice1.equals(bob));
        System.out.println("bob.toString(): " + bob);

        Manager car1 = new Manager("Car1 Cracker", 80000, 1987, 12, 15);
        Manager boss = new Manager("Car1 Cracker", 80000, 1987, 12, 15);
        boss.setBonus(5000);
        System.out.println("boss.toString(): " + boss);
        System.out.println("car1.equals(boss): " + car1.equals(boss));
        System.out.println("alice1.hashCode(): " + alice1.hashCode());
        System.out.println("alice3.hashCode(): " + alice3.hashCode());
        System.out.println("bob.hashCode(): " + bob.hashCode());
        System.out.println("car1.hashCode(): " + car1.hashCode());
    }
}