TimeUnit类的sleep()方法用于使用此时间单位执行。这是一种方便的方法，可以将时间参数睡眠为方法所需的形式。
用法:
public void sleep(long timeout)
throws InterruptedException
参数：此方法接受强制参数超时，这是最短的睡眠时间。如果小于或等于零，则根本不睡觉。
返回值：此方法不返回任何内容。
异常：如果在睡眠期间被中断，则此方法将引发InterruptedException。
以下示例程序旨在说明TimeUnit sleep()方法的实现：
示例1:
// Java program to demonstrate
// sleep() method of TimeUnit Class
import .*;
class GFG {
public static void main(String args[])
{
// Get time to sleep
long timeToSleep = 0L;
// Create a TimeUnit object
TimeUnit time = ;
try {
("Going to sleep for "
+ timeToSleep
+ " seconds");
// using sleep() method
(timeToSleep);
("Slept for "
+ timeToSleep
+ " seconds");
}
catch (InterruptedException e) {
("Interrupted "
+ "while Sleeping");
}
}
}
输出：
Going to sleep for 0 seconds
Slept for 0 seconds
示例2:
// Java program to demonstrate
// sleep() method of TimeUnit Class
import .*;
class GFG {
public static void main(String args[])
{
// Get time to sleep
long timeToSleep = 10L;
// Create a TimeUnit object
TimeUnit time = ;
try {
("Going to sleep for "
+ timeToSleep
+ " seconds");
// using sleep() method
(timeToSleep);
("Slept for "
+ timeToSleep
+ " seconds");
}
catch (InterruptedException e) {
("Interrupted "
+ "while Sleeping");
}
}
}
输出：
Going to sleep for 10 seconds
Slept for 10 seconds