java change time to hh:mm:ss format

To change a time to the hh:mm:ss format in Java, you can use the SimpleDateFormat class. This class allows you to specify a pattern for formatting and parsing dates and times.

Here's an example of how to use SimpleDateFormat to convert a Date object to a string in the hh:mm:ss format:

import java.text.SimpleDateFormat;
import java.util.Date;

public class Main {
  public static void main(String[] args) {
    // Create a Date object representing the current time
    Date date = new Date();

    // Create a SimpleDateFormat object with the desired format pattern
    SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");

    // Use the SimpleDateFormat object to format the Date object as a string
    String formattedTime = formatter.format(date);

    // Print the formatted string
    System.out.println(formattedTime);  // prints the current time in the hh:mm:ss format
  }
}

Note that the H in the format pattern represents the hour in the 24-hour clock, so the resulting string will have a range of 00 to 23 for the hours. If you want to use the 12-hour clock instead, you can use the h character in the format pattern.

You can also use SimpleDateFormat to parse a string in the hh:mm:ss format back into a Date object. Just call the parse method of SimpleDateFormat and pass it the string to be parsed.