Java TimeUnit sleep()方法及示例

TimeUnit类的sleep()方法用于使用该时间单位执行Thread.sleep。这是一个方便的方法，可以将时间参数睡成Thread.sleep方法所要求的形式。

语法。

public void sleep(long timeout)
           throws InterruptedException

参数。该方法接受一个强制性参数timeout，它是睡眠的最小时间。如果这个参数小于或等于0，那么就根本不进行睡眠。

返回值。这个方法不返回任何东西。

异常。如果在睡眠时被打断，该方法会抛出InterruptedException。

下面的程序说明了TimeUnit sleep()方法的实现。

程序 1:

// 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

程序2。

// 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