Java Date Validations and Various Regex Validators

import java.text.DateFormat;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Date; public class CheckDateFormat {  public static void main(String... args) {    Date date = checkDates("2016-01-01");  System.out.println(date);   date = checkDates("2016-13-01");  System.out.println(date);   //returns null   date...

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