一个JAVA的小APPLET求救！！！

import java.applet.*;
import java.awt.*;
import java.net.*;
import java.awt.event.*;

class PcPanel extends Panel{
String filename = "1.gif";
Image no1;

public void initImg() {
URL url = null;

try {
url = Class.forName("Lucky").getResource("1.gif");
} catch (Exception e) {}

no1 = getToolkit().getImage(url);
MediaTracker mt = new MediaTracker(this);
mt.addImage(no1);

try {
mt.wait();
mt.checkAll();
} catch (Exception e) {}
}

public void paint (Graphics p) {
p.drawImage(no1,100,200,300,400,this);
}
}

public class Lucky extends Applet implements ActionListener{
Panel pNorth = new Panel();
PcPanel pCenter = new PcPanel();
Panel pBottom = new Panel();
Label label = new Label("请你输入您的估价：");