Java多線程之多線程之間按順序調用

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多線程之間按順序調用，實現A->B->C

1. 要求：

• AA打印5次，BB打印10次，CC打印15次
• 接著
• AA打印5次，BB打印10次，CC打印15次
• …來10輪

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代碼實現：

import java.util.concurrent.locks.Condition; import java.util.concurrent.locks.Lock; import java.util.concurrent.locks.ReentrantLock;class ShareResource {private int number = 1; // 1: A 2:B 3:Cprivate Lock lock = new ReentrantLock();private Condition c1 = lock.newCondition();private Condition c2 = lock.newCondition();private Condition c3 = lock.newCondition();public void print5(int totalLoop) {lock.lock();try {//1.判斷while (number !=1) {c1.await();} // 2.干活for (int i = 1; i <= 5; i++) {System.out.println(Thread.currentThread().getName() + "\t" + i+"\t totalLoop:"+totalLoop);} // 3，通知number =2;c2.signal();} catch (Exception e) {e.printStackTrace();} finally {lock.unlock();}}public void print10(int totalLoop) {lock.lock();try {//1.判斷while (number !=2) {c2.await();} // 2.干活for (int i = 1; i <= 10; i++) {System.out.println(Thread.currentThread().getName() + "\t" + i+"\t totalLoop:"+totalLoop);} // 3，通知number =3;c3.signal();} catch (Exception e) {e.printStackTrace();} finally {lock.unlock();}}public void print15(int totalLoop) {lock.lock();try {//1.判斷while (number !=3) {c3.await();} // 2.干活for (int i = 1; i <= 15; i++) {System.out.println(Thread.currentThread().getName() + "\t" + i+"\t totalLoop:"+totalLoop);} // 3，通知number =1;c1.signal();} catch (Exception e) {e.printStackTrace();} finally {lock.unlock();}} }public class ThreadOrderAccess {public static void main(String[] args) {ShareResource sr = new ShareResource();new Thread(() -> {for (int i = 1; i <=10 ; i++) {sr.print5(i);}},"A").start();new Thread(() -> {for (int i = 1; i <=10 ; i++) {sr.print10(i);}},"B").start();new Thread(() -> {for (int i = 1; i <=10 ; i++) {sr.print15(i);}},"C").start();} }

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多線程技巧口訣：

1. 線程 操作 資源類

2. 高內聚 低耦合

體會！

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