Java code for validating date

The expression for day validation is a group of three mutually exclusive sub-expressions or alternatives. This expression will validate dates in US format from years 1800 to 2199.

* * Tests against current date minus 24 hours * so users in different time zones from the server can * be accommodated.

* * @param p Date String date to be tested * @return true if date (@ am) = yesterday (@am) */ public static boolean is Valid Future Date(String p Date String) /** * This method tests whether the date string passed in represents * a real date in mm/dd/YYYY format.

However, I'm strongly against rejecting five or more digits, as that essentially puts an expiration date on your code.

It may be early, but why introduce an unnecessary Y10K problem? Your many catch-clauses provide a detailed message, but does anyone need it? a single catch clause stating "expected MM/DD/YYYY, got ..." should do.

): If the year is divisible by 4, it's a leap year UNLESS it's divisible by 100, in which case it's not a leap year UNLESS it's divisible by 400, in which case it is a leap year.

If the year is not divisible by 4, it's not a leap year. An if statement that determines the number of days in the month entered and stores that value in variable days In Month.You can use following method to switch between American and English date formats dynamically at runtime based on an additional boolean parameter.I am having trouble with the following project on hand. Here is the leap year rule (there's more to it than you may have thought!Put another way, it's a leap year if a) it's divisible by 400, or b) it's divisible by 4 and it's not divisible by 100. If the month entered is not valid, days In Month should get 0.Note that to figure out the number of days in February you'll need to check if it's a leap year. An assignment statement that sets day Valid to true if the day entered is legal for the given month and year. If the month, day, and year entered are all valid, print "Date is valid" and indicate whether or not it is a leap year.// updated via the `Scheduled Thread Pool Executor` private int year; private int month; private int day; private static final Pattern DATE_PATTERN = Pattern.compile("\s*(\d)/(\d)/(\d))\s*"); public static boolean is Valid Date(String date) As already said, solution reading the input char by char would be faster, but I'd go the opposite direction.

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