CODEWITHSUNDEEP
javaandroiddate
tanzilamohita
tanzilamohita

Reputation: 107

how to compare current day & month with given day & month in java

I want to compare current date with the given date. Current date format will be (dd-MM-YYYY). I don't want to get the current year. Suppose today's date is 30-08-2016. I want to get only 30-08, I don't want current year 2016. The given date is 15-08 and 31-08. I did not get the current date like this 30-08. How can I get this and how can I compare? Here is my code which I have tried:

Date date1_aug, date2_aug, cur_date;

String cur_date_string, sDay, sMonth;

SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-YYYY");


Calendar calendar = Calendar.getInstance();
int year = calendar.get(Calendar.YEAR);
int month = calendar.get(Calendar.MONTH)+1;
int day = calendar.get(Calendar.DATE);

sDay = Integer.toString(day);
sMonth = Integer.toString(month);

cur_date_string = sDay+"-"+sMonth;

            try {
                cur_date = sdf.parse(cur_date_string);
            } catch (java.text.ParseException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

  1. another function:

            try{
                    date1_aug = sdf.parse("15-08");
                    date2_aug = sdf.parse("31-08");

                    if(cur_date.equals(date1_aug) || cur_date.after(date1_aug) || cur_date.before(date2_aug)){
                        textView_Amount_LateFee.setText(Config.fine_aug.get(1));
                    }


                }catch(ParseException ex){
                    ex.printStackTrace();
                }

Upvotes: 3

Views: 3311

Answers (4)

Basil Bourque
Basil Bourque

Reputation: 339073

java.time.MonthDay

Use modern date-time classes in the ThreeTenABP project, an Android adaptation of the back-port of the java-time classes built into Java 8 and later. Avoid the troublesome old legacy date-time classes.

These java.time classes include the MonthDay class to represent a month and a day-of-month without a year.

MonthDay md = MonthDay.of( 8 , 15 );

This class already implements the Comparable interface and its compareTo method. Also implements methods equals, isBefore, and isAfter. So, job done.

Determining the current MonthDay requires a time zone. For any given moment the date varies by time zone.

ZoneId z = ZoneId.of( "America/Montreal" );
MonthDay today = MonthDay.now( z );

About java.time

The java.time framework is built into Java 8 and later. These classes supplant the troublesome old legacy date-time classes such as java.util.Date, Calendar, & SimpleDateFormat.

The Joda-Time project, now in maintenance mode, advises migration to the java.time classes.

To learn more, see the Oracle Tutorial. And search Stack Overflow for many examples and explanations. Specification is JSR 310.

Where to obtain the java.time classes?

Upvotes: 1

Uma Kanth
Uma Kanth

Reputation: 5629

If you want to ignore the year, forget about using the date concept itself. 

String given_date = "15-08";

String[] tokens = given_date.split("-");

int given_day = Integer.parseInt(tokens[0]);
int given_month = Integer.parseInt(tokens[1]);

Calendar c = Calendar.getInstance();

int now_month = c.get(Calendar.MONTH) + 1;
int now_day = c.get(Calendar.DATE);

System.out.println(given_day + " " + given_month + " " + now_day + " " + now_month);

if (now_month > given_month) {
    System.out.println("Before Today!");
} else if (now_month < given_month) {
    System.out.println("After Today!");
} else {
    if (now_day > given_day) {
        System.out.println("Before Today!");
    } else if (now_day < given_day) {
        System.out.println("After Today!");
    } else {
        System.out.println("Today!");
    }
}

Upvotes: 0

sajan
sajan

Reputation: 389

function to check dob( with current date)
/** dob should be in the format yyyy-MM-dd hh:mm:ss */
public static boolean isTodayBdy(String dob) {
    Date today = new Date();
    try {
        if(dob.length() > 1){
            Date dobDate = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss").parse(dob);
            if ((today.getMonth() == dobDate.getMonth()) && (today.getDate() == dobDate.getDate())) {
                return true;
            }
        }
    } catch (ParseException e) {
        return false;
    }
    return false;
}

Upvotes: 0

pianista
pianista

Reputation: 98

Have you tried to use the same year in the dates you want to compare?

Just using Calendar, set the year to be the same in the two Date objects and after that compare them...

(Take care with the leap-years)

Upvotes: 0

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