[SOLVED] Prevent invalid date from getting converted into date of next month in jdk6?

Prevent invalid date from getting converted into date of next month in jdk6?

Consider the snippet:

String dateStr = "Mon Jan 32 00:00:00 IST 2015";    // 32 Jan 2015

DateFormat formatter = new SimpleDateFormat("E MMM dd HH:mm:ss Z yyyy");
DateFormat ddMMyyyy = new SimpleDateFormat("dd.MM.yyyy");
System.out.println(ddMMyyyy.format(formatter.parse(dateStr)));

gives me the output as

01.02.2015     //   Ist February 2015

I wish to prevent this to make the user aware on the UI that is an invalid date?
Any suggestions?

Solution

The option setLenient() of your SimpleDateFormat is what you are looking for.

After you set isLenient to false, it will only accept correctly formatted dates anymore, and throw a ParseException in other cases.

String dateStr = "Mon Jan 32 00:00:00 IST 2015";    // 32 Jan 2015

DateFormat formatter = new SimpleDateFormat("E MMM dd HH:mm:ss Z yyyy");
formatter.setLenient(false);
DateFormat ddMMyyyy = new SimpleDateFormat("dd.MM.yyyy");
try {
    System.out.println(ddMMyyyy.format(formatter.parse(dateStr)));
} catch (ParseException e) {
    // Your date is invalid
}