CODEWITHSUNDEEP
javacalendar
user2295277
user2295277

Reputation: 219

Get date from calendar

Hi everyone in my program i receive a date like: 2015-01-18

It's a calendar object and i need to get the day, month and the year from the object. Right now i do something like:

int day = date.get(Calendar.DAY_OF_MONTH);
int month = date.get(Calender.MONTH + 1);
int year = date.get(Calender.Year);

The output is:

day = 18
month = 1
year = 2015

My problem is that i wanna get the month in this case like 01 and not 1 because that value is parsed later on my code and needs to be on that format. Is ugly to append the 0 before that 1 so anyone knoenter code herews a better way to do this? Thanks

Upvotes: 1

Views: 21106

Answers (2)

eckes
eckes

Reputation: 10433

You need to 

int month = cal.get(Calender.MONTH) + 1; // 0..11 -> 1..12

to get the int for the month (the + must be outside the argument).

If you need a string with a leading zero from that integer, you can use textformat:

System.out.printf("month=%02d%n", month);
String monthStr = String.format("%02d", month);

But, you actually do not have to take the route via ints, you can directly format parts of a Date into strings:

monthStr = new SimpleDateFormat("MM", Locale.ENGLISH).format(cal.getTime());

Upvotes: 4

wassgren
wassgren

Reputation: 19231

If you need to pass the data as "01" an int is the wrong datatype. You need to pass it as a String. You can format the date using SimpleDateFormat. That way you can choose which elements to pick from the date and the format they should have. Example:

final Calendar calendar = Calendar.getInstance();
final Date date = calendar.getTime();
String day = new SimpleDateFormat("dd").format(date);    // always 2 digits
String month = new SimpleDateFormat("MM").format(date);  // always 2 digits
String year = new SimpleDateFormat("yyyy").format(date); // 4 digit year

You can also format the full date like this:

String full = new SimpleDateFormat("yyyy-MM-dd").format(date); // e.g. 2015-01-18

The JavaDoc for SimpleDateFormat fully explains the various formatting options. Please note that SimpleDateFormat is not thread safe.

Upvotes: 6

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