# to calculate the difference between two dates in java

May 16, 2008 at 7:53 PM

Hi

import java.util.*;
import java.util.Calendar;

public static void main(String[] args) {
// Creates two calendars instances
Calendar calendar1 = Calendar.getInstance();
Calendar calendar2 = Calendar.getInstance();

// Set the date for both of the calendar instance
calendar1.set(2007, 12, 30);
calendar2.set(2008, 05, 03);

// Get the represented date in milliseconds
long milis1 = calendar1.getTimeInMillis();
long milis2 = calendar2.getTimeInMillis();

// Calculate difference in milliseconds
long day = milis2 - milis1;

// Calculate difference in seconds
long diffSeconds = day / 1000;

// Calculate difference in minutes
long diffMinutes = day / (60 * 1000);

// Calculate difference in hours
long diffHours = day / (60 * 60 * 1000);

// Calculate difference in days
long diffDays = day / (24 * 60 * 60 * 1000);

System.out.println("In milliseconds: " + day + " milliseconds.");
System.out.println("In seconds: " + diffSeconds + " seconds.");
System.out.println("In minutes: " + diffMinutes + " minutes.");
System.out.println("In hours: " + diffHours + " hours.");
System.out.println("In days: " + diffDays + " days.");
}
}

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