import java.applet.Applet; import java.awt.Event; import java.util.Enumeration; import java.awt.Color; import Slider; import Balloon; public class SliderApplet extends Applet { private Slider slider; public void init() { slider = new Slider(this); this.add(slider); this.setBackground(Color.white); } public void setValue(int value) { Enumeration applets = this.getAppletContext().getApplets(); while (applets.hasMoreElements()) { Applet applet = (Applet) (applets.nextElement()); if (applet instanceof Balloon) ((Balloon) applet).setSize(value); } } }