Java : Time

This is the program section.

import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {
   private final static Scanner scanner = new Scanner(System.in);

    public static void main(String[] args) {

         String time;
         String ampm;
         String hour;
         String minute;
         String second;
         int hourpm;

         time = scanner.next();
        
         ampm = time.substring(time.length() - 2);
      
         hour = time.split(":")[0];
         minute = time.split(":")[1];
         second = time.split(":")[2].substring(0,2);
     //  System.out.println(ampm);
         if (ampm.equals("PM")){
             hourpm = Integer.parseInt(hour);
             hourpm = hourpm + 12;
           
             System.out.println(""+hourpm+":"+minute+":"+second);
         }
        else {
            System.out.println(""+hour+":"+minute+":"+second);
        }
     
}
}    ;