public class SillyKeypad extends DBFrame implements KeyPadClient{ public void keypressCallback(String text){ System.out.println(text); } public SillyKeypad(){ super(300,400); String labels[]={"1","2", "buckle my shoe"}; this.add(new KeyPad(labels,2,this)); } public static void main(String []args){ SillyKeyPad k=new SillyKeyPad(); } }