import java.applet.Applet; import java.awt.*; /** Draw circles centered where the user clicks. * Uses an external listener. * <P> * Taken from Core Web Programming Java 2 Edition * from Prentice Hall and Sun Microsystems Press, * http://www.corewebprogramming.com/. * May be freely used or adapted. */ public class CircleDrawer1 extends Applet { public void init() { setForeground(Color.blue); addMouseListener(new CircleListener()); } }