Contents of page :
- Program/Approach 1 to check whether difference between given two dates is greater than 3 days or not ?
- Program/ Approach 2 to check whether difference between given two dates is greater than 3 days or not ?
Program/Approach 1 to check whether difference between given two dates is greater than 3 days or not ?
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.GregorianCalendar;
/** Copyright (c), AnkitMittal JavaMadeSoEasy.com */
public class DateTest {
public static void main(String... a) {
//1. Forming manual date
Date date1 = null;
Date date2 = null;
try {
SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy");
date1 = sdf.parse("11-02-2015");
date2 = sdf.parse("23-02-2015");
} catch (ParseException pe) {
pe.printStackTrace();
}
//2. Forming GregorianCalendar from manual date
GregorianCalendar cal1 = new GregorianCalendar();
GregorianCalendar cal2 = new GregorianCalendar();
cal1.setTime(date1);
cal2.setTime(date2);
//----------------------------Now, starts actual LOGIC------------------
//3. LOGIC for finding difference two dates is greater than 3 days or not
long diffIn_MilliSec = Math.abs(cal1.getTimeInMillis() - cal2.getTimeInMillis()); //abs have been used to avoid negative results
if(diffIn_MilliSec / (1000 * 60 * 60 * 24) > 3){
System.out.println("difference two date1 and date2 is greater than 3 days");
} else{
System.out.println("difference two date1 and date2 is less than 3 days");
}
}
}
/*OUTPUT
difference two date1 and date2 is greater than 3 days
*/
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Program/ Approach 2 to check whether difference between given two dates is greater than 3 days or not ?
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
/** Copyright (c), AnkitMittal JavaMadeSoEasy.com */
public class DateTest {
public static void main(String... a) {
//1. Forming manual date
Date date1 = null;
Date date2 = null;
try {
SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy");
date1 = sdf.parse("11-02-2015");
date2 = sdf.parse("23-02-2015");
} catch (ParseException pe) {
pe.printStackTrace();
}
//2. FormingGregorianCalendar from manual date
GregorianCalendar cal1 = new GregorianCalendar();
GregorianCalendar cal2 = new GregorianCalendar();
cal1.setTime(date1);
cal2.setTime(date2);
//----------------------------Now, starts actual LOGIC------------------
//Add 3 days to date
cal1.add(Calendar.DATE, 3);
//Now, find out whether cal1 is before cal2 or not
//Example >
//Adding 3 days to 11-02-2015 will make it 14-02-2015,
//So cal1 (i.e. 14-02-2015) is before date2 (i.e. 23-02-2015)
if(cal1.before(cal2)){
System.out.println("difference two dates is greater than 3 days");
} else{
System.out.println("difference two dates is less than 3 days");
}
}
}
/*OUTPUT
difference two dates is greater than 3 days
*/
|
RELATED LINKS>
Creating Date >
Creating Date in java using Calendar, GregorianCalendar and java.util.Date | Getting Year, Month, Date, Hour, Minute, Second from current date
Creating Date manually - by passing users parameter>
Forming date MANUALLY using java.util.Date’s constructor, GregorianCalendar’s constructor and set method in java
Difference between two Dates>
Difference between two dates in days, hours, minutes, seconds, milliSeconds- where dates are manually created using dd-MM-yyyy and dd-MM-yyyy hh:mm:ss format
Labels:
Core Java
Date tutorials