Question

java多线程的例子谁有，共享下。

java多线程的例子谁有，共享下。

Answer 1

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ThreadPerformed extends JFrame implements ActionListener{
JButton jbOk=new JButton("确定");
double test;

public ThreadPerformed() {
this.setTitle("多线程优化界面的显示");
this.setBounds(200,300,350,200);
this.setVisible(true);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

jbOk.setMargin(new Insets(0,0,0,0));
this.add(jbOk,BorderLayout.NORTH);
jbOk.addActionListener(this);
}

public void actionPerformed(ActionEvent e){
MyTread tt=new MyTread();
tt.start();

/* 没有利用多线程点击完确定按钮后，界面由于进行运算而不能响应，
for (long i=0;i<1000000000;i++){
test=test+Math.random()*Math.PI;
}
*/
}

public static void main (String[] args) {
new ThreadPerformed();
}
}

//开辟一个单独的线程，负责复杂计算，点击完确定按钮后，界面立刻就响应，计算在后台进行
class MyTread extends Thread {
double test;
public void run(){
for(long i=0;i<1000000000;i++) {
test=test+Math.random()*Math.PI;
}
}
}

Answer 2

public class TestRunnable implements Runnable {
private int i ;

public void run() {
for( ; i < 30; i++){
System.out.println(Thread.currentThread().getName()+ " " + i + "ok");
}

}

public static void main(String[] args) {
int i = 0;
for(; i < 30; i++){
System.out.println(Thread.currentThread().getName() + " " + i);
if(i == 10){
TestRunnable tr = new TestRunnable();
new Thread(tr, "子线程0").start();
new Thread(tr, "子线程1").start();
}
}

}

}