Java Program to display time in 24-hour format

Use the SimpleDateFormat class to display time in 24-hour format.

Set the format

Date dt = new Date();
SimpleDateFormat dateFormat;
dateFormat = new SimpleDateFormat("kk:mm:ss");

Now, the following will display time in 24-hour format

dateFormat.format(dt)

The following is an example

Example

 Live Demo

import java.text.SimpleDateFormat;
import java.util.Date;
public class Demo {
   public static void main(String[] argv) throws Exception {
      Date dt = new Date();
      SimpleDateFormat dateFormat;
      dateFormat = new SimpleDateFormat("kk:mm:ss");
      System.out.println("Time in 24 hr format = "+dateFormat.format(dt));
   }
}

Output

Time in 24 hr format = 11:40:52