Java Utililty Methods Regex Password Validate

List of utility methods to do Regex Password Validate

Description

The list of methods to do Regex Password Validate are organized into topic(s).

Method

booleanpasswordContainInvalidCharacter(String password)
password Contain Invalid Character
Pattern pattern = Pattern.compile("[a-zA-Z0-9_@#$%^&*]+");
if (!pattern.matcher(password).matches()) {
    return true;
return false;
booleanpasswordIsValid(String password)
Validates whether a password is valid.
if (password == null || password.trim().length() < 8 || password.trim().length() > 35) {
    return false;
return DIGIT_PATTERN.matcher(password).matches() && UPPERCASE_PATTERN.matcher(password).matches();
StringpasswordValidation()
password Validation
final String password_regex = "^[A-za-z\\d_-]{8,}$";
Scanner scanner = new Scanner(System.in);
String string;
Pattern pattern = Pattern.compile(password_regex);
while (true) {
    System.out.println("enter password: ");
    string = scanner.nextLine();
    Matcher matcher = pattern.matcher(string);
...
booleanpasswordValidation(String password)
password Validation
String regex = "\\w{6,19}";
Pattern p = Pattern.compile(regex);
Matcher m = p.matcher(password);
return m.matches();
booleanpasswordValidator(String password)
password Validator
String passwordPattern = "^[a-z0-9_-]{3,15}$";
validate(password, passwordPattern);
return validate(password, passwordPattern);