Java 8 LocalDateTime is parsing invalid date

Question

I wanted to validate date in client side so I wrote the following code. But instead of getting an exception I am getting a proper date object for 31st of February date strin

Answer 1

try {
    SimpleDateFormat df = new java.text.SimpleDateFormat("HH:mm:ss MM/dd/yyyy");
    df.setLenient(false);
    System.out.println(df.parse("11:30:59 02/29/2015"));
} catch (java.text.ParseException e) {
  System.out.println(e);
}

I found one solution to recognize date as a valid date with DateFormat.setLenient(boolean). If you try to parse any invalid date it will throws parse exception.

Edit:

Java 8, but this will raise exception if a month is not between 1 and 12, if a day is more than 32. Exactly not working. But for month its working.

try {
TemporalAccessor ta = DateTimeFormatter.ofPattern("HH:mm:ss MM/dd/yyyy").parse("11:30:59 02/32/2015");
} catch (Exception e) {
System.out.println(e);
}

Output:

java.time.format.DateTimeParseException: Text '11:30:59 02/32/2015' could not be
 parsed: Invalid value for DayOfMonth (valid values 1 - 28/31): 32