@Override
	public void run() {
		try {
			for (int i = 0; i < 20; i++) {
				staticInt++;
				// 时刻修改着静态变量staticInt的值，第二个线程进来，staticInt就为10了
				if (staticInt == 10) {
					Thread.sleep(5000);
				}
				System.err.println("[" + Thread.currentThread().getId() + "]当i=" + i + "获取staticInt 的值:" + staticInt);
			}
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
	}