SimpleDateFormat, exclude wrong dates

Question

Is there a way to exclude incorrect dates with a SimpleDateFormat? I mean, say for instance that you want to enter 31st of June, 2009. That should produce an error, because that date is not possible. However, for some reason, that date is converted to the 1st of July.
What I can do is convert the text to a Date object, than convert it back to a String and compare it to the original value. If these are different, throw an error. However, I hope there's a better, more proper way of doing this. Any help would be appreciated :-).

Answer 1

I am unaware of a something that would automatically throw an error if that happened....
But, there are only 12 months, and most of them are either 30 or 31 days. (not much work)
Im not going to write all the code for you, You need to figure most of it out...but you could do something like:
if (  (day > 31) && (month == Jan || month ==Mar ||...))
else if ((day > 30) .... ))
...just dont forget about Feburary, and leap years ars every 4 years (it may be more complicated i dont remember):
bool leapyear = false;
if (years % 4 == 0)
  leapyear = true;