This example formats the time by using SimpleDateFormat("HH-mm-ss a") constructor and sdf.format(date) method of SimpleDateFormat class.

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

public class Main{
   public static void main(String[] args){
      Date date = new Date();
      String strDateFormat = "HH:mm:ss a";
      SimpleDateFormat sdf = new SimpleDateFormat(strDateFormat);
      System.out.println(sdf.format(date));
   }
}