Why does sdf.format(date) converts 2018-12-30 to 2019-12-30 in java? [duplicate]

Answer 1

You don't need to format the date again with SimpleDateFormat. Just use as follows.

Date format required : 2019-12-30

The appropriate date format specified will be : yyyy.MM.dd (yyyy : Represents full year)

SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
Date date = simpleDateFormat.parse("2018-12-30");
String sDate = simpleDateFormat.format(date);