synchronized-顺序输出

编程要求

请仔细阅读右侧代码，在 Begin-End 区域内进行代码补充，使线程依照先后顺序依次输出JavaThread+线程名。

测试说明

测试输入：无；

预期输出：

JavaThreadAA

JavaThreadBB

JavaThreadCC

JavaThreadAA

JavaThreadBB

JavaThreadCC

JavaThreadAA

JavaThreadBB

JavaThreadCC

JavaThreadAA

JavaThreadBB

JavaThreadCC

JavaThreadAA

JavaThreadBB

JavaThreadCC

下面展示一些

内联代码片

。

package step1;

public class Task {
	public static void main(String[] args) throws Exception {
		/********* Begin *********/
		//在这里创建线程， 开启线程
	
Object a=new Object();
		Object b=new Object();
		Object c=new Object();
	MyThread t1 = new MyThread("AA",a,b);
	MyThread t2 = new MyThread("BB",b,c);
	MyThread t3 = new MyThread("CC",c,a);
	new Thread(t1).start();
	//t1.start();
	Thread.sleep(100);
	new Thread(t2).start();
	//t2.start();
	Thread.sleep(100);
	new Thread(t3).start();
	//t3.start();
	Thread.sleep(100);

		
		/********* End *********/
	}
}

class MyThread extends Thread {
	/********* Begin *********/
	Object prev;
	Object self;
	
	String threadName;
	public MyThread(String threadName,Object prev,Object self) {
		this.threadName=threadName;
		this.prev=prev;
		this.self=self;
	}

	public void run() {
		int count = 5;
		
		while(count > 0){
			synchronized(prev) {
				synchronized(self) {
					System.out.println("Java Thread" + this.threadName);
			count--;
			self.notify();
				}
				try {
					prev.wait();
				}catch(Exception e) {
				e.printStackTrace();	
				}
			}		
		}
		System.exit(0);
	
	}


	/********* End *********/
}