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, "线程1"); Test1 th2 = new Test1(lock, condition, "线程2"); Test1 th3 = new Test1(lock, condition, "线程3"); Test2 t2 = new Test2(condition, lock, "我是唤醒线程"); 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; } @Override public void run() { for (int i = 0; i < 10; i++) { try { lock.lock();// 加锁 if (i == 5) { try { condition1.await(); System.out.println(Thread.currentThread().getName() + "当前线程获取到的值为:++++++++++++" + i); } catch (InterruptedException e) { System.out.println(Thread.currentThread().getName() + ":线程被中断了!"); } } else { System.out.println(Thread.currentThread().getName() + ":当前线程获取到的值为===》" + i); } } catch (Exception e) { System.out.println("系统发生异常!"); } finally { lock.unlock();// 解锁 } } } } class Test2 extends Thread { private Condition condition; public ReentrantLock lock; /** * @param condition协作对象 * @param lock锁对象 * @param name线程名称 */ public Test2(Condition condition, ReentrantLock lock, String name) { super(name); this.condition = condition; this.lock = lock; } @Override public void run() { try { lock.lock();// 加锁 condition.signal();// 唤醒启动单个线程 System.out.println(Thread.currentThread().getName() + ":已经唤醒了一个线程!"); } catch (Exception e) { System.out.println(Thread.currentThread().getName() + ":线程挂了!"); } finally { lock.unlock();// 解锁 } } }
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