public class InterfaceTestProg {
public static void main (String [] args) {
ClassAB ab = new ClassAB ();
ab.printA ();
ab.printB ();
ab.printAB ();
}
interface InterfaceA {void printA ();}
interface InterfaceB {void printB ();}
interface InterfaceAB extends InterfaceA, InterfaceB {void printAB ();}
public static class ClassAB implements InterfaceAB {
ClassAB () {}
@Override
public void printA () {
System.out.println ("A");
}
@Override
public void printB () {
System.out.println ("B");
}
@Override
public void printAB () {
System.out.println ("AB");
}
}
}
