Convert String month to Int month [Java]

Question

I'm trying to convert a String month to a int month in Java. I do not want my program to have a lot of logic on it, so I'm trying to do it without having to create a switch case or a Enum. If not possible, i'll have to do deal with it and create that logic...

My String Sample is this:

String date = "2017-Oct-27";

And I want it to be like this:

String date = "2017-10-27";

Can anyone help me please? Thanks

You can use a SimpleDateFormat https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html — hamena314, Oct 27 '17 at 10:12
@Mário Correia Do you want to use third party jar?? Also , are you using java 8?? — mohit sharma, Oct 27 '17 at 10:39
@MárioCorreia Using java 8 you can do this: DateTimeFormatter parser = DateTimeFormatter.ofPattern("MMM") .withLocale(Locale.ENGLISH); TemporalAccessor accessor = parser.parse(month); — mohit sharma, Oct 27 '17 at 11:03

Venkatesh Konatham · Accepted Answer · 2017-10-27T10:59:49.310

1

Please try below code

String input = "2017-Oct-27";
SimpleDateFormat parser = new SimpleDateFormat("yyyy-MMM-dd");
String formattedDate= "";
Date date;
try {
    date = parser.parse(input);
    SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd", Locale.US);
    formattedDate = formatter.format(date);
} catch (ParseException e1) {
    e1.printStackTrace();
}

edited Oct 27 '17 at 10:59

answered Oct 27 '17 at 10:13

Venkatesh Konatham

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No, it has raised an exception: Exception in thread "main" java.text.ParseException: Unparseable date: "2017-Oct-27" – Mário Correia Oct 27 '17 at 10:17
are you passing right format, send me the logs. I have tested it locally and it works – Venkatesh Konatham Oct 27 '17 at 10:27
1

For the translation of Oct the Locale is important; `new SimpleDateFormat("yyyy-MMM-dd", Locale.US);` (for (US) English) – Joop Eggen Oct 27 '17 at 10:30
hmm may be due to this he is facing issue – Venkatesh Konatham Oct 27 '17 at 10:31
Yes, that was the problem Joop. I'm in Portugal, so it probably did not recognize the sintax for "out". Thanks both for your help!!! – Mário Correia Oct 27 '17 at 10:43
good, i have updated my answer – Venkatesh Konatham Oct 27 '17 at 11:00

Convert String month to Int month [Java]

1 Answers1