Java并发编程的艺术（一）

题目1

创建3个线程，让3个线程分别按着顺序打印AAAA，BBBB，CCCC（第一个线程打印AAAA，第二个线程打印BBBB，第一个线程始终在第二个线程之前打印）

代码（该代码为打印3个线程分别打印一次）

public class JoinTest {

	public static void main(String[] args) {
		Thread prev = Thread.currentThread();
		String[] array = {"AAAA","BBBBB","CCCC"};
		for(int i = 0;i<3;i++){
			Thread thread = new Thread(new MyThread(prev,array[i]),"Thread"+i);
			thread.start();
			prev = thread;
		}

	}
}

class MyThread implements Runnable{
	private Thread thread;
	private String print;
	public MyThread(Thread thread,String print){
		this.thread = thread;
		this.print = print;
	}

	@Override
	public void run() {
		try {
			thread.join();
			for(int i = 0;i<3;i++){
				System.out.println(print);
			}
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
		System.out.println(Thread.currentThread().getName());
	}

}

运行结果

AAAA
AAAA
AAAA
Thread0

BBBB
BBBB
BBBB
Thread1

CCCC
CCCC
CCCC
Thread2

题目1 扩展

只创建3个线程，循环打印 题目1 的字符串，并且按照上题中的线程顺序打印