Java Utililty Methods Regex Password Validate

List of utility methods to do Regex Password Validate

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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);