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Java Subtracting Time Span

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In this example java program we have subtracted the two time spans with the use of add() method of Calendar class which is available in the java.util package.

Java Subtracting Time Span

     

In this example java program we have subtracted  the two time spans with the use of add() method of Calendar class which is available in the java.util package. We can subtract the time spans with the use of add() method which takes two arguments, first is the field and another is amount and if we will be providing negative integer value it automatically subtracts the given amount accordingly.

In our java program we have created an object of Calendar by calling constructor of GregorianCalendar with the date 10 October 2008. Now suppose we want to subtract 2 Months in this time span with the use of add() method . This can be done as follows:

 calendar.add(Calendar.MONTH,-2);

Where Calendar.MONTHS represents integer value for Months. add() method automatically does the rolling according to the calendar addition or subtraction.

Here is the example code of SubtractTimeSpan.java as follows:

SubtractTimeSpan.java

 import java.text.*;
 import java.util.Calendar;
 import java.util.GregorianCalendar; 

 public class SubtractTimeSpan
 {
 public static void main(String[] args)
 {
 // set calendar to 10 Oct 2008
 Calendar calendar = new GregorianCalendar(2008,Calendar.OCTOBER,10);
 System.out.println("Before Subtracting date is: ");
 SimpleDateFormat formatter = new SimpleDateFormat("d-MMMM-yyyy hh:mm");
 System.out.println(formatter.format(calendar.getTime()));
 
 System.out.println("Subtracting 2 Months ");
 // subtract 2 Months  
 calendar.add(Calendar.MONTH,-2);
 
 // Printing date before 2 Months
 System.out.println("After Subtracting date is: ");
 formatter = new SimpleDateFormat("d-MMMM-yyyy hh:mm");
 System.out.println(formatter.format(calendar.getTime()));
 }  
 }

Output:

C:\DateExample>javac SubtractTimeSpan.java

C:\DateExample>java SubtractTimeSpan
Before Subtracting date is:
10-October-2008 12:00
Subtracting 2 Months
After Subtracting date is:
10-August-2008 12:00

Download Source Code

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Posted on: October 14, 2008

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Comments:1
siddharth mandloi
October 18, 2012
Program

How to Subtract two sql time in java Using Hibernate
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