InterruptedException的处理
使用Thread.currentThread().interrupt();
示例
public class ThreadUtil {
	private ThreadUtil() {
	}
	public static void sleep(long millis) {
		try {
			Thread.sleep(millis);
		} catch (InterruptedException e) {
			// 处理InterruptedException
			// https://www.ibm.com/developerworks/cn/java/j-jtp05236.html
			Thread.currentThread().interrupt();
		}
	}
	public static void sleep(int i, TimeUnit timeUnit) {
		sleep(timeUnit.toMillis(i));
	}
}
