multithread.rar

public class multithread { public static void main(String[] args) { MyThread t1 = new MyThread("First"); MyThread t2 = new MyThread("Second"); new Thread(t1).start(); new Thread(t2).start(); } } class MyThread implements Runnable { String id; int counter=0; public boolean stopFlag; multithread instance; MyThread(String id) { this.id=id; } public void run() { stopFlag=false; System.out.println(id+"start:"); while(!stopFlag) { // synchronized(counter) { System.out.println(id+":"+counter++); try { Thread.sleep((int)(1000*Math.random())); } catch(Exception e){} if(counter>20)stopFlag=true; } } } }