Java: How to use interface

Tags

interface, java

interface GunInterface {
public void shot();
}

class Bomber implements GunInterface {
public void shot() {
System.out.println(“Bombbb !?”);
}
}

class Bazuka implements GunInterface {
public void shot() {
System.out.println(“Bazuka”);
}
}

public class RefreshInterface {
public RefreshInterface()    {
Bomber     bomb = new Bomber();
Bazuka    bazu = new Bazuka();
GunInterface gun = bomb;
gun.shot();
gun = bazu;
gun.shot();
((GunInterface) bomb).shot();
((GunInterface) bazu).shot();
}
public static void main(String [] argv)    {
new RefreshInterface();
}
}