[SOLVED] calculate 3 months after the date

calculate 3 months after the date - Android

I want to calculate 4 months after the date I pulled from the database. How can I do that. The output of history is as follows.

Wed Nov 27 14:42:23 GMT+03:00 2019

  JSONObject form_tarih2 = jObj.getJSONObject("form_tarih2");
        String date = form_tarih2.getString("date");
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.US);
        Date calculateDate = sdf.parse(date);

Solution

Try this:

JSONObject form_tarih2 = jObj.getJSONObject("form_tarih2");
String date = form_tarih2.getString("date");
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.US);
Date calculateDate = sdf.parse(date);

final Calendar calendar = Calendar.getInstance();
calendar.setTime(calculateDate);
calendar.add(Calendar.MONTH,4);

You can add/sub days, months, year etc according to your need using Calendar