package unit8; import java.applet.Applet;
import java.awt.Label;
import java.awt.TextField; public class TestRunnable extends Applet implements Runnable{
Label prompt1 = new Label("The first thread:");
Label prompt2 = new Label ("The second thread:");
TextField threadFirst = new TextField(28);
TextField threadSecond = new TextField(28);
Thread thread1,thread2;
int count1=0,count2=0;
public void init(){
add(prompt1);
add(threadFirst);
add(prompt2);
add(threadSecond);
}
public void start(){
//创建线程对象,具有当前类的run方法,并用字符串指定线程对象的名字
thread1 = new Thread(this,"FirstThread");
thread2 = new Thread(this,"SecondThread");
thread1.start();
thread2.start();
}
public void run(){
String currentRunning;
while(true){
try{
Thread.sleep((int)(Math.random()*3000));
}catch (InterruptedException e) {
// TODO: handle exception
}
currentRunning = Thread.currentThread().getName();
if(currentRunning.equals("FirstThread")){
count1++;
threadFirst.setText("线程1调用次数:"+count1);
}else if(currentRunning.equals("SecondThread")){
count2++;
threadSecond.setText("线程2调用次数:"+count2);
}
}
}
}
通过实现Runnable接口来实现所线程,具体实现run方法,这样当主程序sleep的时候就会执行子线程,这里的子线程都是Thread类的实例对象。