twothreads.java

java Thread应用

import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
public class TwoThreads extends Applet implements Runnable//Applet的主类
{
    Label prompt1=new Label("第一个子线程");//建立标签1
    Label prompt2=new Label("第二个子线程");//建立标签2
    TextField thread_1=new TextField(14);//建立文本框1
    TextField thread_2=new TextField(14);//建立文本框2
    Thread thread1,thread2;//声明两个线程对象
    int count1=0,count2=0;//定义两个计数器
    public void init()
    {
        add(prompt1);
        add(thread_1);
        add(prompt2);
        add(thread_2);
    }
    public void start()
    {
        thread1=new Thread(this,"FirstThread");
        thread2=new Thread(this,"SecondThread");
        thread1.start();
        thread2.start();
    }
    public void run()
    {
        String curRunning;
        while(true)
        {
            try
            {
                Thread.sleep((int)(Math.random()*3000));
            }catch(InterruptedException e){}
            curRunning=Thread.currentThread().getName();
            if(curRunning.equals("FirstThread"))
            {
                count1++;
                thread_1.setText("线程1第"+count1+"次被调度");
            }
           else if(curRunning.equals("SecondThread"))
           {
               count2++;
               thread_2.setText("线程2第"+count2+"次被调度");
           }

        }
    }
}