求救！！我为什么运行不成功？？

在main()里好像应该
JFrame frame=....
JApplet applet=....
frame.getContentPane().add(applet);
而不是在applet里加frame

应该是applet加到frame中吧，你看这段：
import javax.swing.*;
import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;
import java.applet.*;public class applet5 extends Applet {
Image img1=null;
Image img2=null;
int width1=0,height1=0,w1=0,h1=0,wid1=0,hei1=0,w11=0,h11=0;
int width2=0,height2=0,w2=0,h2=0,wid2=0,hei2=0,w22=0,h22=0;
canvas can1=null;
canvas can2=null;
MediaTracker mt=new MediaTracker(this); public void init() {
        img1=this.getImage(this.getCodeBase(),"1.gif");
img2=this.getImage(this.getCodeBase(),"2.gif");
this.setLayout(null);
mt.addImage(img1,0);
mt.addImage(img2,0);
try {
   mt.waitForAll();
} catch(Exception ex) {
System.err.println(ex.toString());
}
can1=new canvas(img1);
can2=new canvas(img2);
width1=img1.getWidth(this);
height1=img1.getHeight(this);
width2=img2.getWidth(this);
height2=img2.getHeight(this);
wid1=hei1=100;
wid2=hei2=200;
this.add(can1);
this.add(can2);
can1.setBounds(60,60,width1,height1);
can2.setBounds(250,200,width2,height2);
}    public void dd(){
     /*
     img1=this.getImage(this.getCodeBase(),"1.gif");
img2=this.getImage(this.getCodeBase(),"2.gif");
this.setLayout(null);
mt.addImage(img1,0);
mt.addImage(img2,0);
try {
   mt.waitForAll();
} catch(Exception ex) {
System.err.println(ex.toString());
}
can1=new canvas(img1);
can2=new canvas(img2);
width1=img1.getWidth(this);
height1=img1.getHeight(this);
width2=img2.getWidth(this);
height2=img2.getHeight(this);
wid1=hei1=100;
wid2=hei2=200;
this.add(can1);
this.add(can2);
can1.setBounds(100,100,width1,height1);
can2.setBounds(200,200,width2,height2);
*/
    } public void paint(Graphics g) {
//g.drawRect(200,100,50,50);
//g.drawRoundRect(200,200,50,50,50,50);
//Rectangle clipRect = g.getClipBounds();

//g.drawLine(wid1+width1/2,hei1+height1/2,wid2+width2/2,hei2+height2/2);
} class canvas extends Canvas {
Image im1=null;
public canvas(Image im) {
super();
this.setCursor(new Cursor(Cursor.HAND_CURSOR));
im1=im;
this.addMouseMotionListener(new MouseMotionAdapter() {
   public void mouseDragged(MouseEvent e) {
     if(e.getSource()==can1) {
     w1=e.getX();
     h1=e.getY();
     //System.out.println(w1);
     wid1=((applet5)((canvas)e.getSource()).getParent()).can1.getX();
     hei1=((applet5)((canvas)e.getSource()).getParent()).can1.getY();
     //System.out.println(Math.abs(wid1-w1));
     //System.out.println(Math.abs(hei1-h1));
     //if (Math.abs(wid1-w1)<10 && Math.abs(hei1-h1)<10){
     //return;
     ((applet5)((canvas)e.getSource()).getParent()).can1.setBounds(wid1,hei1,width1+w1,height1+h1);//wid1+w1-w11,hei1+h1-h11,width1,height1
     ((applet5)((canvas)e.getSource()).getParent()).validate();
     ((canvas)e.getSource()).repaint();
     ((applet5)((canvas)e.getSource()).getParent()).repaint();
         //}else{
         //((applet5)((canvas)e.getSource()).getParent()).can1.setBounds(wid1+w1-w11,hei1+h1-h11,width1,height1);//wid1+w1-w11,hei1+h1-h11,width1,height1
     //((applet5)((canvas)e.getSource()).getParent()).validate();
     //((canvas)e.getSource()).repaint();
     //((applet5)((canvas)e.getSource()).getParent()).repaint();
        // }
     } else if(e.getSource()==can2) {
       w2=e.getX();
       h2=e.getY();
       wid2=((applet5)((canvas)e.getSource()).getParent()).can2.getX();
       hei2=((applet5)((canvas)e.getSource()).getParent()).can2.getY();
       ((applet5)((canvas)e.getSource()).getParent()).can2.setBounds(wid2+w2-w22,hei2+h2-h22,width2,height2);
       ((applet5)((canvas)e.getSource()).getParent()).validate();
       ((canvas)e.getSource()).repaint();
     ((applet5)((canvas)e.getSource()).getParent()).repaint();
     }
   }
});
this.addMouseListener(new MouseAdapter() {
   public void mousePressed(MouseEvent e) {
     if(e.getSource()==can1) {
       w11=e.getX();
       h11=e.getY();
     } else if(e.getSource()==can2) {
       w22=e.getX();
       h22=e.getY();
     }
   }
});
} public void paint(Graphics g) {
g.drawImage(im1,0,0,this);
}
}
/*
public static void main(String[] args){
    JApplet applet51 = new applet5();
    JFrame frame = new JFrame("Applet1c");
frame.getContentPane().add(applet51);
frame.setSize(500,500);
applet51.init();
applet51.start();
frame.setVisible(true);
}*/
}
/**/

修改了一点点东东。在本机上测试通过//RadioBoxNew.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;public class RadioBoxNew extends JApplet {
JTextField t = new JTextField();
JCheckBox[] cb = {
new JCheckBox("CheckBox 1"),
new JCheckBox("CheckBox 2"),
new JCheckBox("CheckBox 3")
    };
    ButtonGroup group = new ButtonGroup();
    JRadioButton
      cb4 = new JRadioButton("four"),
      cb5 = new JRadioButton("five"),
      cb6 = new JRadioButton("six");
    //checking the source:
    class ILCheck implements ItemListener{
     public void itemStateChanged(ItemEvent e){
     for(int i = 0;i<cb.length;i++){
     if(e.getSource().equals(cb[i])){
     t.setText("Check Box"+(i+1));
     return;
     }
     }
     }
    }
    // vs. an individual for each class
    class IL4 implements ItemListener{
     public void itemStateChanged(ItemEvent e){
     t.setText("Check Box 4");
     }
    }
    class IL5 implements ItemListener{
     public void itemStateChanged(ItemEvent e){
     t.setText("Check Box 5");
     }
    }
    class IL6 implements ItemListener{
     public void itemStateChanged(ItemEvent e){
     t.setText("Check Box 6");
     }
    }
    class WClose extends WindowAdapter{
     public void windowClosing(WindowEvent e){
     System.exit(0);
     }
    }
    public void init(){
     Container cp = getContentPane();
     cp.setLayout(new FlowLayout());
     t.setEditable(false);
     cp.add(t);
     ILCheck il = new ILCheck();
     for(int i=0;i<cb.length;i++){
     cb[i].addItemListener(il);
     cp.add(cb[i]);
     }
     group.add(cb4);
     group.add(cb5);
     group.add(cb6);
     cb4.addItemListener(new IL4());
     cb5.addItemListener(new IL5());
     cb6.addItemListener(new IL6());
     cp.add(cb4);
     cp.add(cb6);
     cp.add(cb5);
    }
    public static void main(String args[]){
     /*
     JApplet applet = new RadioBoxNew();
     JFrame frame = new JFrame("RadioBoxNew");
     //frame.setDefaultCloseOperation(3);
     frame.addWindowListener(new WClose());
     frame.setSize(300,300);
     applet.add(frame);
     applet.init();
     applet.start();
     frame.setVisible(true);
     */
       //修改处：
     RadioBoxNew applet = new RadioBoxNew();
      JFrame frame = new JFrame("TextAreaNew");
      frame.addWindowListener(new WindowAdapter() {
        public void windowClosing(WindowEvent e){
          System.exit(0);
        }
      });
      frame.getContentPane().add(applet, BorderLayout.CENTER);
      frame.setSize(300,300);
      applet.init();
      applet.start();
      frame.setVisible(true);
    }
}

谢谢 shine333(shine）、 yzxasd(风)、tangshancheng(98007）
正在调试中......

调试易

求救！！我为什么运行不成功？？

解决方案 »