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作者 [Applet]想问下这段代码为何Button不出来
Alucard





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于 2006-08-28 09:06 user profilesend a private message to usersearch all posts byselect and copy to clipboard. 
ie only, sorry for netscape users:-)add this post to my favorite list
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;

class MyCanvas extends Canvas {
public MyCanvas(JugglerApplet d) { fData = d; setSize(800, 800); }

public void paint(Graphics g) { fData.paint(g); }

private JugglerApplet fData;
}

public class JugglerApplet extends Applet implements ActionListener, ItemListener, Runnable {

private JFrame fFrame;
private MyCanvas fCanvas;
private boolean running;
private JButton fButton;
private Thread fWorkThread;
private Image fImage;
private Choice fChoice;

public void actionPerformed(ActionEvent e)
{

}

public void itemStateChanged(ItemEvent e) {
// TODO Auto-generated method stub

}

public void run() {

}

public void init() {
fFrame = new JFrame();
fFrame.setLayout(new BorderLayout());

fCanvas = new MyCanvas(this);
JPanel mp = new JPanel();
mp.add(fCanvas);
fFrame.add(mp, "Center");

JPanel cp = new JPanel();

JComboBox fCombo = new JComboBox();
fCombo.addItem("Beginner");
fCombo.addItem("Expert");
cp.add(fCombo);

fButton = new JButton("start");
cp.add(fButton);

fFrame.add(cp, "South");

fButton.addActionListener(this);
running = false;
fWorkThread = new Thread(this);
fWorkThread.start();

fImage = getImage(getDocumentBase(), "./man.jpg");

}

public void paint(Graphics g) {
if(fImage == null) {
g.drawString("No picture available", 50,50);
return;
}
g.drawImage(fImage, 0, 0, null);
}

public static void main(String[] args) {

}

}


只显示出来了图片,想在下方显示按钮和下拉菜单,都没出来,请问为何?




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