子线程循环10次，接着主线程循环100，接着又回到子线程循环10次，接着再回到主线程又循环100，如此循环50次，请写出程序。
/** * 子线程循环10次，接着主线程循环100，接着又回到子线程循环10次，接着再回到主线程又循环100，如此循环50次，请写出程序。 * @author lijinnan * @date:2013-11-5 下午3:07:10 */public class ThreadComunication { private static final int ROUND_COUNT = 50; public static void main(String[] args) { //主线程和子线程“共享”一个Busines实例 final Business business = new Business(); /* //主线程 for (int i = 0; i < ROUND_COUNT; i++) { business.main(i); } */ //子线程-注意要先启动子线程，否则子线程不会启动，主线程在roundIndex=0执行完毕后就陷入无限等待 new Thread(new Runnable() { @Override public void run() { for (int i = 0; i < ROUND_COUNT; i++) { business.sub(i); } } }).start(); //主线程 for (int i = 0; i < ROUND_COUNT; i++) { business.main(i); } }}class Business { private static final int SUB_COUNT = 10; private static final int MAIN_COUNT = 100; private boolean doSub; public synchronized void sub(int roundIndex) { while (!doSub) { try { wait(); } catch (InterruptedException e) { //ignore } } for (int i = 0; i < SUB_COUNT; i++) { System.out.println("sub " + i + " of " + roundIndex); } doSub = false; notifyAll(); } public synchronized void main(int roundIndex) { while (doSub) { try { wait(); } catch (InterruptedException e) { //ignore } } for (int i = 0; i < MAIN_COUNT; i++) { System.out.println("main " + i + " of " + roundIndex); } doSub = true; notifyAll(); } }