How to get difference between two calendar times

Issue

I want to get the two calender time difference

my calender is

 val calendar1 = Calendar.getInstance()
    calendar1[Calendar.HOUR+1] = hour.toString().toInt()
    calendar1[Calendar.MINUTE] = minute.toString().toInt()

this is giving in 12 hours format Wed Nov 17 06:30:31 GMT+05:30 2021

current calender is:-

 val calendar = Calendar.getInstance()
    calendar[Calendar.HOUR]=calendar.get(Calendar.HOUR)
    calendar[Calendar.MINUTE]=calendar.get(Calendar.MINUTE)

this is giving in 24 hours format Wed Nov 17 18:01:32 GMT+05:30 2021

how to get this calender in 12 hours format

thats why im having difficult in finding two calender difference

can anyone help?

Solution

In first calender you are using

calendar1[Calendar.HOUR+1] -> which will be equivalent to calendar1[Calendar.HOUR_OF_DAY]

Here are the constants from Calendar class

public static final int HOUR = 10;
public static final int HOUR_OF_DAY = 11;

use calendar1[Calendar.HOUR] for 24 hour format .

Better way is to get millis from both calenders and find difference between 2 millis .

To get millis use calendar.time.time

for getting difference between millis see this answer

Answered By - Manohar