java线程（jdk5升级解决方案）

jdk5提供了将同步synchronized替换成了现实Lock操作。将Object中的wait，notify，notifyAll，替换了Condition对象，该实例实现了本方唤醒对方操作

代码如下:

import java.util.concurrent.locks.Condition;import java.util.concurrent.locks.ReentrantLock;/** * 生产消费者问题 *  * jdk 1.5之后提供了多线程升级解决方案 *  *1.将同步synchronized替换成 lock操作 *2.将Object中的wait(),notify(),notifyAll()替换成了Condition该对象可以用lock来得到 *3.该实例中实现了本方唤醒对方操作 *  * @author Yxx * */public class ConditionThread2 {public static void main(String agrs[]){Res3 r = new Res3();Producer1 p = new Producer1(r);Consumer1 c = new Consumer1(r);Thread t1 = new Thread(p);Thread t2 = new Thread(c);Thread t3 = new Thread(p);Thread t4 = new Thread(c);t1.start();t2.start();t3.start();t4.start();}}/** * 资源 * @author Yxx * */class Res3{private String name;boolean flag = false;ReentrantLock lock = new ReentrantLock();private Condition con1 = lock.newCondition();private Condition con2 = lock.newCondition();public void set(String name)throws IllegalMonitorStateException{lock.lock();//得到同步锁try{while(flag)try {con1.await();} catch (InterruptedException e) {e.printStackTrace();}this.name = name;System.out.println("生产者生产了商品--------------->"+this.name);flag = true;con2.signal();}finally{lock.unlock();//释放解锁}}public void out(){lock.lock();//得到同步锁try{while(!flag)con2.await();System.out.println("消费者消费了商品-------------------------------------------->"+this.name);flag = false;con1.signal();} catch (InterruptedException e) {e.printStackTrace();}finally{lock.unlock();//释放解锁}}}/** * 生产者 * @author Yxx * */class Producer1 implements Runnable{Res3 r;public Producer1(Res3 r){this.r = r;}public void run() {while(true){r.set("商品");}}}class Consumer1 implements Runnable{Res3 r;public Consumer1(Res3 r){this.r = r;}public void run(){while(true){r.out();}}}