|
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
class Car {
private Lock lock = new ReentrantLock();
private Condition condition = lock.newCondition();
private boolean waxOn = false;//是否上蜡
//上蜡
public void waxed() {
lock.lock();
try {
waxOn = true;
condition.signalAll();
} finally {
lock.unlock();
}
}
//抛光
public void buffed() {
lock.lock();
try {
waxOn = false;
condition.signalAll();
} finally {
lock.unlock();
}
}
//等待上蜡
public void waitForWaxing() throws InterruptedException {
lock.lock();
try {
while(waxOn == false) {
condition.await();
}
} finally {
lock.unlock();
}
}
//等待抛光
public void waitForBuffing() throws InterruptedException {
lock.lock();
try {
while(waxOn == true) {
condition.await();
}
} finally {
lock.unlock();
}
}
}
class WaxOnTask implements Runnable {
private Car car;
private String name;
public WaxOnTask(String name, Car car) {
this.name = name;
this.car = car;
}
@Override
public void run() {
try {
while(!Thread.interrupted()) {
System.out.println("[" + name + "] is Wax on!");//正在上蜡
TimeUnit.MILLISECONDS.sleep(300);
car.waxed();//上蜡完成
car.waitForBuffing();//等待抛光
}
} catch (InterruptedException e) {
System.out.println("[" + name + "] Exiting WaxOnTask via interrupt.");
}
}
}
class BuffTask implements Runnable {
private Car car;
private String name;
public BuffTask(String name, Car car) {
this.name = name;
this.car = car;
}
@Override
public void run() {
try {
while(!Thread.interrupted()) {
car.waitForWaxing();//等待上蜡
System.out.println("[" + name + "] Buffing...");//正在抛光
TimeUnit.MILLISECONDS.sleep(300);
car.buffed();//抛光完成
}
} catch (InterruptedException e) {
System.out.println("[" + name + "] Exiting BuffTask via interrupt.");
}
}
}
public class WaxOMatic2 {
public static void main(String[] args) throws Exception {
Car car = new Car();
ExecutorService exec = Executors.newCachedThreadPool();
//上蜡
exec.execute(new WaxOnTask("Waxx", car));
//抛光
exec.execute(new BuffTask("Buff", car));
//运行一段时间，停止ExecutorService
TimeUnit.SECONDS.sleep(3);
exec.shutdownNow();
}
}
|
