线程同步通信

package cn.itcast;

/**
 * 线程同步通信
 * 主线程执行100次，子线程执行10，如此交替进行，反复50次
 */
public class TraditionalThreadCommunication {
	public static void main(String[] args) {
		final Business business = new Business();
		
		new Thread(new Runnable() {
			@Override
			public void run() {
				for (int i = 1; i <= 50; i++) {
					business.sub(i);
				}
			}
		}).start();

		for (int i = 1; i <= 50; i++) {
			business.main(i);
		}
	}
}

/**
 * 业务类
 */
class Business {
	private boolean bShouldSub = true;

	/**
	 * 子线程
	 * @param i
	 */
	public synchronized void sub(int i) {
		while (!bShouldSub) {
			try {
				this.wait();
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
		
		for (int j = 1; j <= 10; j++) {
			System.out.println("sub thread sequence of " + j + ",loop of " + i);
		}
		
		bShouldSub = false;
		this.notify();
	}

	/**
	 * 主线程
	 * @param i
	 */
	public synchronized void main(int i) {
		while (bShouldSub) {
			try {
				this.wait();
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
		
		for (int j = 1; j <= 100; j++) {
			System.out
					.println("main thread sequence of " + j + ",loop of " + i);
		}
		
		bShouldSub = true;
		this.notify();
	}
}