Login | Register   
RSS Feed
Download our iPhone app
Browse DevX
Sign up for e-mail newsletters from DevX

By submitting your information, you agree that devx.com may send you DevX offers via email, phone and text message, as well as email offers about other products and services that DevX believes may be of interest to you. DevX will process your information in accordance with the Quinstreet Privacy Policy.

Tip of the Day
Language: Java
Expertise: Intermediate
Mar 7, 2017



Understanding the Time Taken to Execute a Task

There are situations when we need to understand the time taken for executing a section of code. We are also aware that System.currentTimeMillis() provides a good estimate of time.

System.nanoTime() is a more accurate version of time and can be used as below.

public class ExecuteTask
    public static void main(String args[])
    private static void executeTask()
        //Capturing the start time
        long startTime = System.nanoTime(); 
        System.out.println("Start time: " + startTime);
        //Execute the task
        for (int i=0;i         {
            //do nothing
        //Capturing the end time
        long endTime = System.nanoTime() - startTime; 
        System.out.println("End time: " + endTime);
M S Sridhar
Comment and Contribute






(Maximum characters: 1200). You have 1200 characters left.



Thanks for your registration, follow us on our social networks to keep up-to-date