CODEWITHSUNDEEP
javadatetimecalendar
Annu
Annu

Reputation: 562

how to get minimum and maximum date from given month in java

how to get minimum and maximum date from given month in java using java.util.Calendar.

Upvotes: 3

Views: 15775

Answers (6)

ZZ 5
ZZ 5

Reputation: 1964

For people that are looking for solution using Java 8 API:

Given month min date:

YearMonth.from(clock.instant().atZone(ZoneId.of("UTC")))
            .atDay(1)
            .atStartOfDay()
            .toInstant(ZoneOffset.UTC)

Given month max date:

YearMonth.from(clock.instant().atZone(ZoneId.of("UTC")))
            .atEndOfMonth()
            .atTime(LocalTime.MAX)
            .toInstant(ZoneOffset.UTC)

Upvotes: 0

Annu
Annu

Reputation: 562

I got solution as below,

public void ddl_month_valueChange(ValueChangeEvent event) {
 int v_month = Integer.parseInt(event.getNewValue().toString()) - 1; 
 java.util.Calendar c1 = java.util.Calendar.getInstance(); 
 c1.set(2011, v_month, 1); 
 Date d_set_att_from = c1.getTime(); 
 cal_att_from_date.setValue(d_set_att_from);
 c1.add(java.util.Calendar.MONTH, 1);
 c1.add(java.util.Calendar.DATE, -1); 
 Date d_set_att_to = c1.getTime();
 cal_att_to_date.setValue(d_set_att_to);  }

Upvotes: 0

Imran
Imran

Reputation: 3024

Minimum date is always 1 and Maximum date can be calculate as

SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
        Calendar calendar = Calendar.getInstance();

        int year = 2010;
        int month = Calendar.FEBRUARY;
        int date = 1;
        int maxDay =0;  

        calendar.set(year, month, date);
        System.out.println("First Day: " + formatter.format(calendar.getTime()));

        //Getting Maximum day for Given Month
        maxDay = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);

        calendar.set(year, month, maxDay);  
        System.out.println("Last Day: " + formatter.format(calendar.getTime()));

Hopefully this will helps

Upvotes: 1

oiavorskyi
oiavorskyi

Reputation: 2941

This could be done this way:

c = ... // get calendar for month you're interested in     
int numberOfDays = c.getActualMaximum(Calendar.DAY_OF_MONTH)

You could find minimum and maximum value the same way for any of components of the date.

Upvotes: 3

Ervi B
Ervi B

Reputation: 800

Have you tried the following?

After setting your calendar object to your desired month,
calendar.getActualMaximum(Calendar.DATE);

For the minimum, I suppose it's always the first.

Hope that helps.

Upvotes: 1

stacker
stacker

Reputation: 68962

The minimum is always the 1st of this month. The maximum can be determined by adding 1 to month and subtracting 1 from the Calendar day field.

Upvotes: 5

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