线程面试题

来源：互联网发布：igbt芯片知乎编辑：程序博客网时间：2024/05/21 20:28

子线程循环10次，接着主线程循环100次，接着又回到子线程循环10次，接着再回到主线程又循环100次，如此循环50次，写出程序？

使用Object.wait()和Object.notify()方法实现等待和唤醒功能，实现多线程之间共享数据

package hb.threadcomunicate;public class SynThread {boolean isSub = true;public synchronized void sub(int loop) {while(!isSub){try {this.wait();} catch (InterruptedException e) {e.printStackTrace();}}for (int i = 0; i < 10; i++) {System.out.println("sub thread : " + i + ";loop " + loop);}isSub = false;this.notify();}public synchronized void main(int loop) {while(isSub){try {this.wait();} catch (InterruptedException e) {e.printStackTrace();}}for (int i = 0; i < 10; i++) {System.out.println("main thread : " + i + ";loop " + loop);}isSub = true;this.notify();}}

package hb.threadcomunicate;public class ThreadCommunicate {public static void main(String[] args) {final SynThread synThread = new SynThread();new Thread(new Runnable() {@Overridepublic void run() {for (int i = 0; i < 50; i++) {synThread.sub(i);}}}).start();new Thread(new Runnable() {@Overridepublic void run() {for (int i = 0; i < 50; i++) {synThread.main(i);}}}).start();}}