Java Utililty Methods Email Validate

List of utility methods to do Email Validate

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Description

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

Method

booleanisValidEmailAddress(String emailAddress)
is Valid Email Address 
if (emailAddress == null) {
    return false;
String expression = "^[\\w\\-]([\\.\\w\\-])+[\\w]+@([\\w\\-]+\\.)+[A-Z]{2,4}$";
Pattern pattern = Pattern.compile(expression, Pattern.CASE_INSENSITIVE);
Matcher matcher = pattern.matcher(emailAddress);
return matcher.matches();
booleanisValidEmailAdress(String email)
returns true if the specified email is well formatted 
return Pattern.matches("^[_a-z0-9-]+(\\.[_a-z0-9-]+)*@[a-z0-9-]+(\\.[a-z0-9-]+)+$", email.toLowerCase());
StringparseEmail(String target)
Parse the target string, and check is obey the email format or not. 
target = parseString(target);
if (target == null) {
    return null;
String regexp = "^\\s*\\w+(?:\\.{0,1}[\\w-]+)*@[a-zA-Z0-9]+(?:[-.][a-zA-Z0-9]+)*\\.[a-zA-Z]+\\s*$";
Pattern pattern = Pattern.compile(regexp);
Matcher matcher = pattern.matcher(target);
return matcher.find() ? target : null;
...
booleanvalidateEmail(String email)
validate Email 
return validatePattern(email, EMAIL_PATTERN);
booleanvalidateEmail(String email)
validate Email 
boolean isValid = false;
Pattern emailPattern = Pattern.compile(EMAIL_PATTERN);
Matcher m = emailPattern.matcher(email);
if ((email.length() <= EMAIL_MAX_LENGTH) && (m.matches())) {
    isValid = true;
return isValid;
BooleanvalidateEmail(String email)
validate Email 
String EMAIL_PATTERN = "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@"
        + "[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";
Pattern pattern;
Matcher matcher;
pattern = Pattern.compile(EMAIL_PATTERN);
matcher = pattern.matcher(email);
if (email == null || "".equals(email) || !matcher.matches()) {
    return false;
...
booleanvalidateEmail(String email)
Validates the syntax of the passed email. 
String patternStr = "^[a-zA-Z][\\w\\.-]*[a-zA-Z0-9]@"
        + "[a-zA-Z0-9][\\w\\.-]*[a-zA-Z0-9]\\.[a-zA-Z][a-zA-Z\\.]*[a-zA-Z]$";
return Pattern.matches(patternStr, email);
booleanvalidateEmail(String email)
Validates email 
pattern = Pattern.compile(EMAIL_PATTERN);
matcher = pattern.matcher(email);
return matcher.matches();
booleanvalidateEmail(String email)
Validates an email address. 
if (email != null) {
    Pattern pattern = Pattern.compile(
            "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$");
    return pattern.matcher(email).matches();
} else {
    return false;
booleanvalidateEmail(String email)
Checks if given email is valid by matching it to regex pattern. 
final Pattern pattern = Pattern.compile("^[a-z0-9._%+-]+@[a-z0-9.-]+\\.[a-z]{2,4}$");
if (!pattern.matcher(email).matches()) {
    return false;
return true;