I want to create a method to check if the Date is in 'mm/dd/yyyy' format in apex

Question

This is the snippet I want to be the structure like this:

public static boolean validateDateFormat(String date1) {
  if(date1.format('mm/dd/yyyy')) {
    return true;
  } else {
    return false;
  }
}

Answer 1

A simple way to do it is by using regex:

public static boolean validateDateFormat(String date1){
    Pattern pattern = Pattern.compile('\\d{2}/\\d{2}/\\d{4}'); 
    Matcher matcher = pattern.matcher(date1);
    return matcher.matches();
}

Note that \d specifies digit and the number in {} after it specifies the quantity e.g. \d{2} specifies 2 digits.