How to calculate the difference between 2 different times being input.

Question

import java.io.*;
import java.util.*;
public class ClockingInOut
public static void main(String[] args) throws IOException
BufferedReader keyboard = new BufferedReader (new InputStreamReader (System.in));
String input, input1, input2;
int num1, num2, answer;
System.out.println ("\t\t\tEMPLOYEE CLOCKING IN AND OUT SYSTEM!");
do
System.out.print ("\nWould you like to clock in and out? yes (y), no(n), ?: ");
input = keyboard.readLine();
if (input.equals("y"))
System.out.print ("Please enter the hours you clocked in: ");
num1 = Integer.parseInt (input1 = keyboard.readLine());
System.out.print ("Please enter the minutes you clocked in: ");
num2 = Integer.parseInt (input2 = keyboard.readLine());
System.out.print ("Now Please enter the hours you clocked out! ");
num1 = Integer.parseInt (input1 = keyboard.readLine());
System.out.print ("And please enter the minutes you clocked out!: ");
num2 = Integer.parseInt (input2 = keyboard.readLine());
Hi people, i think my coding may be wrong. I would like the user to input the hours and then minutes of the time they clocked in and out of work. and then i want the program to be able to calculate the hours worked and print the mesage in the Command Prompt window.
It's really confusing and hard, please help and provide me with the correct soure code if you can.
Also, like in html how the notepad file has to have the opening and closing brackets, does java coding have something like this.
Please reply. Thank You.

Answer 1

hi
check this java class
import java.sql.Time;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
public class util
    public static void main(String[] args)  throws Exception
        long t1 = getTimeOnlyLong();
        Thread.sleeo(2000);
        long t2 = getTimeOnlyLong();
        System.out.println(differenceBetween2Times(t1,t2));
    public static long getTimeOnlyLong()
        Date d = new Date();
        return d.getTime();       
    public static String differenceBetween2Times(long l1 , long l2)
        long diff = l1 - l2;
        System.out.println("differ =  " + diff);
        Date d = new Date();
        d.setTime(diff);
        SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
        return sdf.format(d.getTime());       
}