import java.applet.*;
import java.awt.*;

public class scroller extends Applet

{
 Scrollbar colorscroll = new Scrollbar(Scrollbar.VERTICAL,0,0,0,255);
 int redvalue = 175;
 Label scrollvalue = new Label(String.valueOf(redvalue));
 public void init()
  {
   add(new Label("Scroll to change the color of the box."));
   add(colorscroll);
   colorscroll.setPageIncrement(50);
   colorscroll.setValue(175);
   add(new Label("value of the scrollbar  ="));
   add(scrollvalue);
  }
 public void paint (Graphics g)
  {
   g.setColor(new Color(redvalue,0,0)); 
   g.fillRect(90,90,100,100); 
  }
 public boolean handleEvent(Event evt)
  {
   if (evt.target instanceof Scrollbar)
    {
      redvalue = colorscroll.getValue();
      scrollvalue.setText(String.valueOf(redvalue));
      repaint();
      return true;
    }
   return false;
  }
}