how to convert incoming Json date into java date format?

Question

I am working on Xero accounts Apis In json response i am getting date like below

 \"Date\": \"/Date(1455447600000+1300)/\",

also same date

Answer 1

The +1300 is not a milliseconds offset, it's an hour + minute offset. If you parse just the date part as a long:

Long longDate=Long.valueOf("1455447600000");
Date date = new Date(longDate);
System.out.println(date);

You get (I'm in GMT timezone)

Sun Feb 14 11:00:00 GMT 2016

And you can see that 11 + 13 = 24, and 24 hours is the next day.

You can get the timezone from the offset, knowing the offset is 13 hours and zero minutes:

Calendar c=Calendar.getInstance(TimeZone.getTimeZone(TimeZone.getAvailableIDs(13*3600*1000)[0]));
c.setTimeInMillis(longDate);
DateFormat df=DateFormat.getDateInstance();
df.setTimeZone(c.getTimeZone());
System.out.println(df.format(c.getTime()));

Which gives me

Feb 15, 2016

Here so I calculate the offset as being 13 hours, hence 13*3600 seconds, hence 13*3600*1000 milliseconds. So you can parse your string: what's before the plus sign is the time, what's after is the timezone.