[javaSE] 多线程（join方法）

class JoinTestDemo implements Runnable{

    @Override
    public void run() {
        
        for(int x=0;x<=5;x++){
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            System.out.println(Thread.currentThread().getName()+"===="+x);
        }
    }
    
}
public class JoinDemo {

    /**
     * @param args
     * @throws InterruptedException 
     */
    public static void main(String[] args) throws InterruptedException {
        JoinTestDemo join=new JoinTestDemo();
        Thread t1=new Thread(join);
        Thread t2=new Thread(join);
        t1.start();
        t2.start();
        //上面两个子线程交替执行，主线程冻结，t1走完才解冻
        t1.join();
        //显示主线程
        for(int x=0;x<=5;x++){
            Thread.sleep(100);
            System.out.println(Thread.currentThread().getName()+"===="+x);
        }
    }

}