Android : date format in a String

Question

I have a problem to sort date because of the format of these dates.

I obtain the date :

final Calendar c = Calendar.getInstance();     mYear = c.get(Calendar.YEAR);     mMonth = c.get(Calendar.MONTH);     mDay = c.get(Calendar.DAY_OF_MONTH); 

And I build a String with these values.

dateRappDB = (new StringBuilder()    .append(mYear).append(".")    .append(mMonth + 1).append(".")    .append(mDay).append(" ")).toString(); 

The problem is that if the month is for example February, mMonth value is 2. So dates with months like October (10) comes before in my list.

What I need is that month and day are formated like MM and dd. But I don't know how to do it in my case.

EDIT :

I solved the problem by using a DateFormat like said above.

I replaced this :

dateRappDB = (new StringBuilder()   .append(mYear).append(".")   .append(mMonth + 1).append(".")   .append(mDay).append(" ")).toString(); 

By this :

Date date = new Date(mYear - 1900, mMonth, mDay); dateFacDB = DateFormat.format("yyyy.MM.dd", date).toString(); 

And it works. Thanks to all of you for your help :)

Answer 1

here is a simple way to convert Date to String :

SimpleDateFormat simpleDate = new SimpleDateFormat("dd/MM/yyyy");

String strDt = simpleDate.format(dt);

Answer 2

 Calendar calendar = Calendar.getInstance();  Date now = calendar.getTime();     String timestamp = simpleDateFormat.format(now); 

These might come in handy

SimpleDateFormat simpleDateFormat =     new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSSSSZZZZZ"); 

this format is equal to --> "2016-01-01T09:30:00.000000+01:00"

SimpleDateFormat simpleDateFormat =     new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZZZZZ"); 

this format is equal to --> "2016-06-01T09:30:00+01:00"