Java: How to convert "Mon Jun 18 11:32:05 BST 2012" to 18 June 2012

Question

I have a value like the following Mon Jun 18 11:32:05 BST 2012 and I want to convert this to 18 June 2012

How to convert this?

Below is what i have tried..

public String getRequiredDate(String sendInputDate) {

Optional<OffsetDateTime> date = dateParsing(sendInputDate);

if(date) { 
     String REQUIRED_PATTERN="dd MMMM yyyy";
     DateTimeFormatter formatter = DateTimeFormatter.ofPattern(REQUIRED_PATTERN);

      return date.get().format(formatter);
    }
  }

import java.time.OffsetDateTime; hence returning in same

public static Optional<OffsetDateTime> dateParsing(String date) {
    String PATTERN = "EEE MMM dd HH:mm:ss zzz yyyy";
    DateTimeFormatter formatter = DateTimeFormatter.ofPattern(PATTERN);

    return Optional.of(OffsetDateTime.parse(date, formatter));
  }

But its always returning me " " (blank)

Answer 1

It doesn't "return blank". You presumably have some exception handling somewhere which is swallowing the actual issue and replacing that with a blank string.

The actual issue is this exception:

java.time.format.DateTimeParseException: Text 'Mon Jun 18 11:32:05 BST 2012' could not be parsed:
Unable to obtain OffsetDateTime from TemporalAccessor

i.e. your string does not contain an offset, but you are trying to parse it into something which requires one. It has a zone.

You could parse it into a ZonedDateTime and then convert it, for example.

OffsetDateTime parsed = ZonedDateTime.parse(date, formatter).toOffsetDateTime();