为何显示start :未初始化applet小程序?

Question

答复关键字：
类路径
粗心

Answer 1

这样可以正确显示:import java.awt.*;
import java.applet.*;
import java.net.*;class HeadCanvas extends Canvas
{
 String s;
 Image p1; HeadCanvas()
         {
          s="This is a canvas!";
          setSize(600,200);
          setBackground(Color.orange);
                                   //问题出现在这里          p1=Toolkit.getDefaultToolkit().getImage("argentina.gif ");
           } public void paint(Graphics g)
       {
        g.drawString(s,60,60);
        g.drawImage(p1,60,60,this);
        }
}
public class cs2 extends javax.swing.JApplet//改动一
{
 HeadCanvas headcanvas;
 Image p; public void init()
       {
        headcanvas=new HeadCanvas();
        getContentPane().add(headcanvas,BorderLayout.NORTH);
//改动2
        p=getImage(getCodeBase(),"argentina.gif");        } public void paint(Graphics g)
       {
        g.drawImage(p,100,200,this);
        }
}