谁能帮小弟一个忙小弟感激不尽

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class Mycolor extends Applet{
int value;
TextField tf=new TextField(12);
Scrollbar s1=new Scrollbar(Scrollbar.HORIZONTAL);
public void init(){
add(tf);
this.setLayout(new FlowLayout());
add(s1);
s1.setMinimum(0);
s1.setMaximum(255);
s1.addAdjustmentListener(new AdjustmentListener(){
public void adjustmentValueChanged(AdjustmentEvent e){
value=e.getValue();
if(e.getAdjustable()==s1){
if(e.getAdjustmentType()==AdjustmentEvent.BLOCK_DECREMENT){
tf.setText("当前值"+value);}
if(e.getAdjustmentType()==AdjustmentEvent.BLOCK_INCREMENT){
tf.setText("当前值"+value);}
if(e.getAdjustmentType()==AdjustmentEvent.TRACK){
tf.setText("当前值"+value);}
if(e.getAdjustmentType()==AdjustmentEvent.BLOCK_DECREMENT){
tf.setText("当前值"+value);}
if(e.getAdjustmentType()==AdjustmentEvent.BLOCK_INCREMENT){
tf.setText("当前值"+value);}
}
}
});
}

public void paint(Graphics g){

g.setColor(new Color(0,0,value));
g.fillRect(10,30,60,60);
}
}