Java之线程(join)_JAVA_编程开发_程序员俱乐部

public class MyThread extends Thread {	
	

	@SuppressWarnings("deprecation")
	@Override
	public void run() {
		System.out.println("咫尺天涯的第一个任务启动了。。。");
		int i = 0;
		while(true){
			System.out.println("执行第一个任务的次数: " + (++i));
			if(i == 5){
				System.out.println("第一个任务执行结束,走人...");
				break;
			}
			try {
				Thread.sleep(1000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}	
			
		}
	}
}

public class MyRunnable implements Runnable {

	@SuppressWarnings("deprecation")
	@Override
	public void run() {		
		System.out.println("咫尺天涯的第二个任务启动了。。。");
		int i = 0;
		while(true){
			System.out.println("执行第二个任务次数: " + (++i));
			if(i == 5){
				System.out.println("第二个任务执行结束,再见朋友们!");
				break;
			}
			try {
				Thread.sleep(1000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}		
	}
}

public class Main {
	
	public static void main(String[] args) {
		
		MyThread mt = new MyThread();
		Thread mythread = new Thread(mt,"咫尺天涯(Thread)");		
		System.out.println("第二个任务要等待第一个任务执行结束才能执行...");		
		mythread.start();	
		
		try {			
			mythread.join();	
			//执行后,当前线程不会向下执行,直到把mythread这个线程执行完了后才执行下面的
		} catch (InterruptedException e) {
			e.printStackTrace();
		}	
		
		MyRunnable myRunnable = new MyRunnable();		
		Thread runnable = new Thread(myRunnable,"咫尺天涯(Runnable)");
		runnable.start();				
	}
}