java中的Condition協作線程介面類，javacondition

java中的Condition協作線程介面類，javacondition
在Java的Condition介面中，存在的幾個方法跟Synchronized中的wait(),waitall(),wait(time ^)，這個幾個方法一一對應起來，但是在Lock.newCondition()返回中可以指定指定的線程釋放和等待資源。請看【喚醒單個線程】執行個體：

package TestThread.TestCondition;import java.util.concurrent.locks.ReentrantLock;import java.util.concurrent.locks.*;public class TestCondition {public static void main(String[] args) {ReentrantLock lock = new ReentrantLock();Condition condition = lock.newCondition();Test1 th1 = new Test1(lock, condition, "線程1");Test1 th2 = new Test1(lock, condition, "線程2");Test1 th3 = new Test1(lock, condition, "線程3");Test2 t2 = new Test2(condition, lock, "我是喚醒線程");th1.start();th2.start();th3.start();try {Thread.sleep(1000);t2.start();} catch (InterruptedException e) {e.printStackTrace();}}}class Test1 extends Thread {private ReentrantLock lock;private Condition condition1;public Test1(ReentrantLock lock, Condition condition1, String name) {super(name);this.lock = lock;this.condition1 = condition1;}@Overridepublic void run() {for (int i = 0; i < 10; i++) {try {lock.lock();// 加鎖if (i == 5) {try {condition1.await();System.out.println(Thread.currentThread().getName() + "當前線程擷取到的值為：++++++++++++" + i);} catch (InterruptedException e) {System.out.println(Thread.currentThread().getName() + ":線程被中斷了！");}} else {System.out.println(Thread.currentThread().getName() + ":當前線程擷取到的值為===》" + i);}} catch (Exception e) {System.out.println("系統發生異常！");} finally {lock.unlock();// 解鎖}}}}class Test2 extends Thread {private Condition condition;public ReentrantLock lock;/** * @param condition協作對象 * @param lock鎖對象 * @param name線程名稱 */public Test2(Condition condition, ReentrantLock lock, String name) {super(name);this.condition = condition;this.lock = lock;}@Overridepublic void run() {try {lock.lock();// 加鎖condition.signal();// 喚醒啟動單個線程System.out.println(Thread.currentThread().getName() + ":已經喚醒了一個線程！");} catch (Exception e) {System.out.println(Thread.currentThread().getName() + ":線程掛了！");} finally {lock.unlock();// 解鎖}}}

 

 

運行結果：2017-03-2501:16:17