Java中的 TimeUnit sleep() 方法及示例

TimeUnit 类的sleep()方法用于使用此时间单位执行 Thread.sleep。这是一种方便的方法，可将时间参数休眠为 Thread.sleep 方法所需的形式。

句法：

public void sleep(long timeout)
           throws InterruptedException

参数：此方法接受强制参数超时，这是睡眠的最短时间。如果这小于或等于零，则根本不睡觉。

返回值：此方法不返回任何内容。

异常：如果在睡眠时被中断，此方法将抛出InterruptedException 。

下面的程序说明了 TimeUnit sleep() 方法的实现：

方案一：

// Java program to demonstrate
// sleep() method of TimeUnit Class
  
import java.util.concurrent.*;
  
class GFG {
    public static void main(String args[])
    {
        // Get time to sleep
        long timeToSleep = 0L;
  
        // Create a TimeUnit object
        TimeUnit time = TimeUnit.SECONDS;
  
        try {
  
            System.out.println("Going to sleep for "
                               + timeToSleep
                               + " seconds");
  
            // using sleep() method
            time.sleep(timeToSleep);
  
            System.out.println("Slept for "
                               + timeToSleep
                               + " seconds");
        }
  
        catch (InterruptedException e) {
            System.out.println("Interrupted "
                               + "while Sleeping");
        }
    }
}

输出：

Going to sleep for 0 seconds
Slept for 0 seconds

方案二：

// Java program to demonstrate
// sleep() method of TimeUnit Class
  
import java.util.concurrent.*;
  
class GFG {
    public static void main(String args[])
    {
        // Get time to sleep
        long timeToSleep = 10L;
  
        // Create a TimeUnit object
        TimeUnit time = TimeUnit.SECONDS;
  
        try {
  
            System.out.println("Going to sleep for "
                               + timeToSleep
                               + " seconds");
  
            // using sleep() method
            time.sleep(timeToSleep);
  
            System.out.println("Slept for "
                               + timeToSleep
                               + " seconds");
        }
  
        catch (InterruptedException e) {
            System.out.println("Interrupted "
                               + "while Sleeping");
        }
    }
}

输出：

Going to sleep for 10 seconds
Slept for 10 seconds