Program 1
Program 2public class zzz extends yyy { }
Program 3class yyy { } public class zzz extends yyy { }
Program 4interface yyy { } public class zzz extends yyy { }
Program 5interface yyy { } public class zzz implements yyy { }
Program 6interface yyy { void aa(); } public class zzz implements yyy { }
Program 7interface yyy { void aa(); } public class zzz implements yyy { void aa() { } }
Program 8interface yyy { public void aa(); } public class zzz implements yyy { void aa() { } }
Program 9interface yyy { public void aa(); } public class zzz implements yyy { public void aa() { } }
Program 10interface yyy { void aa(); } public class zzz implements yyy { public void aa() { } }
Program 11abstract class yyy { void aa(); } public class zzz extends yyy { public void aa() { } }
Program 12abstract class yyy { abstract void aa(); } public class zzz extends yyy { public void aa() { } }
Program 13abstract class yyy { abstract void aa(); } public class zzz extends yyy { }
Program 14class yyy { abstract void aa(); } public class zzz extends yyy { public void aa(); }
Program 15abstract class yyy { abstract void aa(); } public abstract class zzz extends yyy { public void aa() { } }
Program 16abstract class yyy { abstract void aa(); } public abstract class zzz extends yyy { }
Program 17interface yyy { public void aa(); public void bb() { } } public class zzz implements yyy { public void aa() { } }
Program 18interface yyy { public int i; public void aa(); } public class zzz implements yyy { public void aa() { } }
interface yyy { public int i = 10; public void aa(); } public class zzz implements yyy { public void aa() { } }
Show some class and extend your reach to the next topic "Piddling with the image " or just implement The Mailing Interface i.e., slip on your comments, feedback, suggestions et al to us.