package base;

/**
 * volatile关键字保证数据的有序性、原子性、可见性
 *
 */
public class VolatileThread {
	private static volatile int i = 0;

	public static void main(String[] args) throws InterruptedException {
		Thread[] threads = new Thread[10];
		for (int i = 0; i < threads.length; i++) {
			threads[i] = new Thread(new PlusTask());
			threads[i].start();
		}
		for (int i = 0; i < threads.length; i++) {
			threads[i].join();
		}
		System.out.println(i);
	}

	public static class PlusTask implements Runnable {

		@Override
		public void run() {
			for (int k = 0; k < 1000; k++) {
				//volatile无法保证一些符合操作的原子性,如++
				i++;
			}
		}

	}
}