How to Parse \"java.text.ParseException: Unparseable Date\" for \"Sat Jun 01 12:53:10 IST 2013\" using SimpleDateFormat?

Parsing Exception: "java.text.ParseException: Unparseable Date" with SimpleDateFormat

When attempting to parse a date from the string "Sat Jun 01 12:53:10 IST 2013" using SimpleDateFormat, you may encounter the error "java.text.ParseException: Unparseable date." This error occurs because the pattern used for parsing, "MMM d, yyyy HH:mm:ss," does not match the input string format.

Solution:

To resolve this issue and successfully parse the given date, you should adjust the pattern in SimpleDateFormat to align with the input string's specific format. For the provided string, a more appropriate pattern would be:

SimpleDateFormat sdf = new SimpleDateFormat("EE MMM dd HH:mm:ss z yyyy",
                                            Locale.ENGLISH);

where:

• "EE MMM dd HH:mm:ss z yyyy" represents the input string's date and time format (e.g., Saturday, June 01, 2013, 12:53:10 IST).
• Locale.ENGLISH ensures the parser understands the English day name format.

Output Formatting:

Once the date has been successfully parsed, you can use a second SimpleDateFormat to format the output in your desired format, "MMM d, yyyy HH:mm:ss":

Date parsedDate = sdf.parse(date);
SimpleDateFormat print = new SimpleDateFormat("MMM d, yyyy HH:mm:ss");
System.out.println(print.format(parsedDate));

Additional Considerations:

• It's recommended to use the precise time zone name in the input string rather than the ambiguous "IST" to avoid potential parsing problems.
• Ensure the locale specified in SimpleDateFormat matches the locale of the expected input to appropriately handle day names and other locale-specific format elements.

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