TimeUnit sleep() method in Java with Examples

The sleep() method of TimeUnit Class is used to performs a Thread.sleep using this time unit. This is a convenience method that sleeps time arguments into the form required by the Thread.sleep method.

Syntax:

public void sleep(long timeout)
           throws InterruptedException

Parameters: This method accepts a mandatory parameters timeout which is the minimum time to sleep. If this is less than or equal to zero, then do not sleep at all.

Return Value: This method does not return anything.

Exception: This method throws InterruptedException if interrupted while sleeping.

Below program illustrate the implementation of TimeUnit sleep() method:

Program 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");
        }
    }
}

Output:

Going to sleep for 0 seconds
Slept for 0 seconds

Program 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");
        }
    }
}

Output:

Going to sleep for 10 seconds
Slept for 10 seconds