Java开发网 - 请教一个关于swing界面刷新的问题。

Topic: 请教一个关于swing界面刷新的问题。

1.请教一个关于swing界面刷新的问题。

Posted by: pilgrimhuyu
Posted on: 2003-05-19 11:35

我想要点击jButton1后jLabel1、jLabel2作一个计数显示，但jLabel1只显示最后的结果，没有刷新的过程，是不是jLabel1的双缓存在作用。请高手指教。谢谢！

import javax.swing.*;
import com.borland.jbcl.layout.*;
import java.awt.*;
import java.awt.event.*;

/**
* Title: 
* Description: 
* Copyright: Copyright Coffee

2003
* Company: 
* @author not attributable
* @version 1.0
*/

public class Test
extends JFrame {
XYLayout xYLayout1 = new XYLayout();
JLabel jLabel1 = new JLabel();
JLabel jLabel2 = new JLabel();
JButton jButton1 = new JButton();

public Test() {
try {
jbInit();
}
catch(Exception e) {
e.printStackTrace();
}
}

public static void main(String[] args) {
Test test = new Test();
test.pack();
}

private void jbInit() throws Exception {
jLabel1.setText("jLabel1");
this.getContentPane().setLayout(xYLayout1);
jLabel2.setText("jLabel2");
jLabel1.setDoubleBuffered(true);
jLabel2.setDoubleBuffered(true);

jButton1.setText("jButton1");
jButton1.addActionListener(new Test_jButton1_actionAdapter(this));
this.getContentPane().add(jLabel1, new XYConstraints(48, 48, 111, 41));
this.getContentPane().add(jLabel2, new XYConstraints(200, 45, 122, 44));
this.getContentPane().add(jButton1, new XYConstraints(42, 129, 93, 44));
this.pack();
this.setVisible(true);
}

void jButton1_actionPerformed(ActionEvent e) {
for (int i = 0; i < 10000; i++) {
jLabel1.setText("1: " + i);
jLabel2.setText("1: " + i);
jLabel1.repaint();
jLabel2.repaint();
this.repaint();

}
}
}

class Test_jButton1_actionAdapter implements java.awt.event.ActionListener {
Test adaptee;

Test_jButton1_actionAdapter(Test adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.jButton1_actionPerformed Envelope

;
}
}

2.Re:请教一个关于swing界面刷新的问题。 [Re: pilgrimhuyu]	Copy to clipboard
Posted by: yakuu Posted on: 2003-05-19 20:21 please use thread. for more detail, take a look at http://sourceforge.net/projects/foxtrot

3.Re:请教一个关于swing界面刷新的问题。 [Re: pilgrimhuyu]	Copy to clipboard
Posted by: pilgrimhuyu Posted on: 2003-05-21 10:48 谢谢！我用您指点的foxtrot已经解决这个问题了。

4.Re:请教一个关于swing界面刷新的问题。 [Re: pilgrimhuyu]	Copy to clipboard
Posted by: ww2003 Posted on: 2003-05-22 11:07 要强制进行刷新，调用revalidate()和repaint()方法