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Condition的功能类似于在传统的线程技术中的,Object.wait()和Object.notify()的功能。
代码
Condition condition = lock.newCondition();
res. condition.await(); 类似wait
res. Condition. Signal() 类似notify

class Res {
public String userName;
public String sex;
public boolean flag = false;
Lock lock = new ReentrantLock();
}

class InputThread extends Thread {
private Res res;
Condition newCondition;
public InputThread(Res res, Condition newCondition) {
this.res = res;
this.newCondition=newCondition;
}

@Override
public void run() {
	int count = 0;
	while (true) {
		// synchronized (res) {

		try {
			res.lock.lock();
			if (res.flag) {
				try {

// res.wait();
newCondition.await();
} catch (Exception e) {
// TODO: handle exception
}
}
if (count == 0) {
res.userName = “余胜军”;
res.sex = “男”;
} else {
res.userName = “小红”;
res.sex = “女”;
}
count = (count + 1) % 2;
res.flag = true;
// res.notify();
newCondition.signal();
} catch (Exception e) {
// TODO: handle exception
}finally {
res.lock.unlock();
}
}

	// }
}

}

class OutThrad extends Thread {
private Res res;
private Condition newCondition;
public OutThrad(Res res,Condition newCondition) {
this.res = res;
this.newCondition=newCondition;
}

@Override
public void run() {
	while (true) {

// synchronized (res) {
try {
res.lock.lock();
if (!res.flag) {
try {
// res.wait();
newCondition.await();
} catch (Exception e) {
// TODO: handle exception
}
}
System.out.println(res.userName + “,” + res.sex);
res.flag = false;
// res.notify();
newCondition.signal();
} catch (Exception e) {
// TODO: handle exception
}finally {
res.lock.unlock();
}
// }
}

}

}

public class ThreadDemo01 {

public static void main(String[] args) {
	Res res = new Res();
	Condition newCondition = res.lock.newCondition();
	InputThread inputThread = new InputThread(res,newCondition);
	OutThrad outThrad = new OutThrad(res,newCondition);
	inputThread.start();
	outThrad.start();
}

}

本文标签： condition

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