Java:probleme avec AdjustementEvent

import java.awt.*;
import java.applet.Applet;
import java.awt.event.*;
//import java.lang.Object;
public class CelsiusValue extends Applet implements AdjustmentListener
{
  private Scrollbar bar;
  private int old,newtemp=0;
  private int fahr=32;
  public void init()
  {
	bar=new Scrollbar(Scrollbar.HORIZONTAL,0,1,0,100);
	bar.addAdjustmentListener(this);
	setLayout(new BorderLayout());
	add("North",bar);
  }
  public void paint(Graphics g)
  {
    g.drawString("Celsius="+newtemp, 30, 50);
    g.drawString("Fahrenheit="+fahr,30,70);
  }
  public void adjustementValueChanged(AdjustementEvent e)
  {
	newtemp=bar.getValue();
	if(newtemp!=old)
	{
		fahr=newtemp*9/5+32;
		old=newtemp;
	}
	repaint();
  }
}