io.github.ninobomba.commons.validator.EmailValidator Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of t4m-commons Show documentation

Tools 4 Monkeys - Java Commons

The newest version!

package io.github.ninobomba.commons.validator;

import org.apache.commons.lang3.StringUtils;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;

/**
 * The EmailValidator class is responsible for validating email addresses based on a regular expression.
 * It implements the ConstraintValidator interface and provides an isValid method to perform the validation.
 *
 * The regular expression used for validation ensures that the email address follows the standard email format.
 *
 * 
Example usage:
 * 
 *     EmailValidator emailValidator = new EmailValidator();
 *     boolean isValid = emailValidator.isValid("[email protected]", null);
 * 
 */
public class EmailValidator implements ConstraintValidator < Email, String > {
	
	private static final String REGEX =
			"^[\\w!#$%&'*+/=?`{|}~^-]+(?:\\.[\\w!#$%&'*+/=?`{|}~^-]+)*@(?:[a-zA-Z0-9-]+\\.)+[a-zA-Z]{2,6}$";
	
	@Override
	public boolean isValid ( String value, ConstraintValidatorContext context ) {
		if ( StringUtils.isBlank ( value ) ) return false;
		return value.matches ( REGEX );
	}
	
}