// Demonstrate scroll bars.
import java.awt.*;
import java.awt.event.*;
import java.applet.*;


public class ScrollBarDemo extends Applet implements AdjustmentListener, MouseMotionListener 
{
 String msg = "";
 Scrollbar vertSB, horzSB;
 public void init() {
 int width = Integer.parseInt(getParameter("width"));
 int height = Integer.parseInt(getParameter("height"));
 vertSB = new Scrollbar(Scrollbar.VERTICAL,
 0, 1, 0, height);
 vertSB.setPreferredSize(new Dimension(20, 100));
 horzSB = new Scrollbar(Scrollbar.HORIZONTAL,
 0, 1, 0, width);
 horzSB.setPreferredSize(new Dimension(100, 20));
 add(vertSB);
 add(horzSB);
 // register to receive adjustment events


 vertSB.addAdjustmentListener(this);
 horzSB.addAdjustmentListener(this);
 addMouseMotionListener(this);
 }
 public void adjustmentValueChanged(AdjustmentEvent ae) {
 repaint();
 }
 // Update scroll bars to reflect mouse dragging.
 public void mouseDragged(MouseEvent me) {
 int x = me.getX();
 int y = me.getY();
 vertSB.setValue(y);
 horzSB.setValue(x);
 repaint();
 }
 // Necessary for MouseMotionListener
 public void mouseMoved(MouseEvent me) {
 }
 // Display current value of scroll bars.
 public void paint(Graphics g) {
 msg = "Vertical: " + vertSB.getValue();
 msg += ", Horizontal: " + horzSB.getValue();
 g.drawString(msg, 6, 160);
 // show current mouse drag position
 g.drawString("*", horzSB.getValue(),
 vertSB.getValue());
}
}