（原创）
测试代码，解决java gui swing多线程界面假死、僵死问题，实现界面动态刷新，动态更新，同步显示数据
主类：
package testguimulitiplethread;
/**
*
* @author Administrator
*/
public class Main {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
NewJFrame nf =new NewJFrame();
}
}
线程类：
package testguimulitiplethread;
/**
*
* @author Administrator
*/
public class TestThread extends Thread{
NewJFrame nf;
@Override
public void run() {
//在Count中暂停线程即可，无需在run()中暂停线程。
/*while(true){
if(nf.getFlag()==1){
try {
Thread.sleep(1000);
} catch (InterruptedException ex) {
//
}
}*/
// else{
Count.testCount(nf);
//执行计算完毕后跳出，线程结束。
nf.setFlag(-1);
// break;
// }
//}
}
}
计算任务类：
package testguimulitiplethread;
/**
*
* @author Administrator
*/
public class Count {
static int c = 10000;
public static void testCount(NewJFrame nf){
for(int i=0;i
//先考虑暂停情况：
while(nf.getFlag()==1){//sleep():暂停，循环暂停。
try {
Thread.sleep(1000);
} catch (InterruptedException ex) {
//
}
}
//再考虑跳出情况：
if(nf.getFlag()==-1){
break;
}
//最后才输出：
System.out.println(i);
nf.getJLabel1().setText(String.valueOf(i));///
//未未优化前的代码：
/* if(nf.getFlag()==0){
System.out.println(i);
nf.getJLabel1().setText(String.valueOf(i));///
}
else{
if(nf.getFlag()==-1){
break;
}
while(nf.getFlag()==1){//sleep():暂停，循环暂停。
try {
Thread.sleep(1000);
} catch (InterruptedException ex) {
//
}
}
//别漏了输出：
System.out.println(i);
nf.getJLabel1().setText(String.valueOf(i));///
}*/
}
}
public static void testCount(){
}
}
界面显示类：（注：界面是用netbeans6.1里的JFrame类选项来创建的）
/*
* NewJFrame.java
*
* Created on 2010年4月24日, 上午11:25
*/
package testguimulitiplethread;
/**
*
* @author Administrator
*/
public class NewJFrame extends javax.swing.JFrame {
private int flag = -1;//-1:未启动，0：启动，1：暂停
TestThread t ;
/** Creates new form NewJFrame */
public NewJFrame() {
initComponents();
this.setVisible(true);
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
//
private void initComponents() {
jButton1 = new javax.swing.JButton();
jLabel1 = new javax.swing.JLabel();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jButton1.setText("开始");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jLabel1.setText("空");
jButton2.setText("暂停");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
jButton3.setText("结束");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(96, 96, 96)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel1, javax.swing.GroupLayout.DEFAULT_SIZE, 156, Short.MAX_VALUE)
.addGap(18, 18, 18))
.addGroup(layout.createSequentialGroup()
.addComponent(jButton1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 32, Short.MAX_VALUE)
.addComponent(jButton2)
.addGap(28, 28, 28)))
.addComponent(jButton3)
.addContainerGap(73, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGap(34, 34, 34)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 77, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 83, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton1)
.addComponent(jButton3)
.addComponent(jButton2))
.addGap(83, 83, 83))
);
pack();
}//
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
//由于程序比较简单，所以提供了暂停功能。而且，在该程序中计算比较简单，所以在计算中暂停依旧可以保持线程安全。
//但对于复杂计算是不是也能提供暂停功能呢？疑惑中……复杂计算的流程多，循环跳转也多，要在暂停的同时保证线程安全难道要把整个程序暂停？
if(flag==-1){
flag=0;
jButton1.setEnabled(false);
jButton1.setText("继续");
t = new TestThread();
t.nf = this;
t.start() ;
}
if(flag==1){
flag=0;
}
}
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
if(flag==0){
flag=1;
jButton1.setEnabled(true);
}
}
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
flag = -1;
jLabel1.setText("空");
jButton1.setEnabled(true);
jButton1.setText("开始");
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new NewJFrame().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JLabel jLabel1;
// End of variables declaration
public javax.swing.JButton getJButton1() {
return jButton1;
}
public javax.swing.JButton getJButton2() {
return jButton2;
}
public javax.swing.JLabel getJLabel1() {
return jLabel1;
}
public int getFlag() {
return flag;
}
public void setFlag(int flag) {
this.flag = flag;
}
}
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代码都在上面了，大家注意看注释~~~~~~~~~
水平有限，望大家不吝赐教~~~~~~~~~~~~~~
今天中午没吃饭，囧~~~~~~~~~~~~~~~~~~~
今天天气不错，外面的小鸟叫了N天了，也不累~
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