Unexpected Output while trying yo convert String to date using FastDateFormat

Question

Problem:

I need to pass Date class Object to a function and that Date Object should contain one Day ahead of the System Time. For Ex: If Today's Date is 2017-04-20 17:01:31.Then,Date Object should contain 2017-04-21 17:01:31

Is it possible to store a specified format into Date Class Object and pass into it.

I tried the following thing and it didn't work.

Can anyone guide me if it is possible through Code or should I use SQL Query Concept to add a Day.

Below is my Code

     public static void main(String[] args) throws ParseException {
        String dateFormat="yyyy-MM-dd HH:mm:ss";
            String s2=addDate(dateFormat);
            convertStringToDate(s2,dateFormat);

        }
    public static Date convertStringToDate(String dateInStr, String dateFormat) throws ParseException
    {
        FastDateFormat fdf=FastDateFormat.getInstance(dateFormat);//("yyyy-MM-dd HH:mm:ss");
        Date date = null;
        date = fdf.parse(dateInStr);
        System.out.println("From convertStringToDate ");
        System.out.println(date);
        return date;
    }
public static String addDate(String dateFormat) throws ParseException{
            FastDateFormat fdf=FastDateFormat.getInstance(dateFormat);
            Calendar c = Calendar.getInstance();    
            c.add(Calendar.DATE,1);
            String s1=fdf.format(c.getTime());
            System.out.println("From addDate ");
            System.out.println(s1);
            return s1;
        }

Expected Output from convertStringToDate:

2017-04-21 17:01:31

OutputShown from convertStringToDate:

Fri Apr 21 17:01:31 IST 2017

I don't understand your question. What is the actual output, what is the expected output? — , Apr 20 '17 at 11:43
"Is it possible to store a specified format into Date Class Object" <- The date class does not have a format, it just contains the data to represent the date. How you format that data when you display it in a GUI is another thing. — OH GOD SPIDERS, Apr 20 '17 at 11:43
No, the format used when a Date is printed via Date#toString is not yours to choose, if you really need that, then use some wrapper around date and a proper Wrapper#toString — , Apr 20 '17 at 11:47
Possible duplicate of [How to parse String to Date using FastDateFormat in a specified format](http://stackoverflow.com/questions/43513600/how-to-parse-string-to-date-using-fastdateformat-in-a-specified-format) — Ole V.V., Apr 20 '17 at 12:35
Even though `FastDateFormat` seems to have som advantages over `SimpleDateFormat`, in 2017 I recommend using the newer Java date and time classes, including `DateTimeFormatter`, which is thread-safe too. — Ole V.V., Apr 20 '17 at 20:38

score 0 · Answer 1 · answered Apr 20 '17 at 11:53

You need to obtain the instance of class Date. In your method addDate you get the required Date and then convert it to String and return a String. And then you convert your String back to Date Why don't you just return Date from your method addDate and be done with it?

Unexpected Output while trying yo convert String to date using FastDateFormat

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