jointhread.java

java课件及例程有一些PPT及一些例程

class JoinThread extends Thread{
    String name;
    JoinThread(String threadName){
        name = threadName;
    }
    public void run(){
        try{
            for(int i = 1;i<6;i++){
                System.out.println(name+":"+i);
                Thread.sleep(1000);
            }
        }catch(InterruptedException e){}
        System.out.println(name+"exiting.");	
    }
    public static void main(String args[]){
        JoinThread t1 = new JoinThread("线程1");
        JoinThread t2 = new JoinThread("线程2");
        JoinThread t3 = new JoinThread("线程3");
        t1.start();
        t2.start();
        t3.start();
        System.out.println("线程1是激活的："+t1.isAlive());
        System.out.println("线程2是激活的："+t2.isAlive());
        System.out.println("线程3是激活的："+t3.isAlive());
        try{
            System.out.println("等待进程运行完毕。");
            t1.join();
            t2.join();
            t3.join();
        }catch(InterruptedException e){}
        System.out.println("线程1是激活的："+t1.isAlive());
        System.out.println("线程2是激活的："+t2.isAlive());
        System.out.println("线程3是激活的："+t3.isAlive());
        System.out.println("主线程结束");

    }
}