conversion of date format "Monday 29th June 2015" to "2015-06-29"

Question

I have date in "Monday 29th June 2015" this format. And i want to change this date format in "2015-06-29" this format.

Answer 1

If you have a string with your date, that you want to convert, use something like this:

String dateString = "Monday 29th June 2015";
//the output format
SimpleDateFormat simple = new SimpleDateFormat("yyyy-MM-dd");
Date date;
try {
    //the input format of the original date
    date = new SimpleDateFormat("EEEE dd MMMM yyyy")
            .parse(dateString);
    Log.e("result date", "Date:" + simple.format(date));

} catch (Exception e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

Answer 2

In Your Date "Monday 29th June 2015" th make it unparseable so i think you should remove that and try to parse your date

    String dateString = "Monday 2nd June 2015";
    String str[] = dateString.split(" ");
    str[1] = str[1].replaceAll("rd","");
    str[1] = str[1].replaceAll("th","");
    str[1] = str[1].replaceAll("st","");
    str[1] = str[1].replaceAll("nd","");
    dateString = str[0]+" "+str[1]+" "+str[2]+" "+str[3];
    SimpleDateFormat simple = new SimpleDateFormat("yyyy-MM-dd");
    Date date;
    try {
        date = new SimpleDateFormat("EEEE dd MMMM yyyy").parse(dateString);
        System.out.println(" Date:" + simple.format(date));
    } catch (Exception e) {
        System.out.println(e.getMessage());
    }

In my code i have take an assumption that you have string values for your date of and which contains 2 digits for all date of months like
"Monday 01st June 2015" if it is not like that you have to convert your date value in 2 digit number OR change my parsing logic to remove st or rd etc from date of month

Hope it will help :)

Answer 3

Something like,

Date d = new Date(old);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String date=sdf.format(d);