Question

What’s the best way to do date validation that includes checking that months are between 1 and 12 and days are between 1 and max. days for the respective month (including leap years)?

Answer 1

In a compressed and more cleaner way:

Calendar cal = Calendar.getInstance();
try {
    cal.setTime(theConcernedDate);
}
catch (Exception e) {
  System.out.println("Invalid date");
}