Email validation with regex.

EmailValidator.java

package net.eldiosantos.testes.controller;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class EmailValidator {

      private final String emailValidationPattern = "[a-z0-9!#$%&\'*+/=?^_\'{|}~-]+(?:.[a-z0-9!#$%&\'*+/=?^_\'{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?";

      public static void main(String[] args) {

        EmailValidator validator = new EmailValidator();

        boolean isValid = validator.validate("eldiosantos@internet.com");
        boolean isValid2 = validator.validate("eldius@my-mail.com");
        boolean isValid3 = validator.validate("fulano@mailinator.");
        boolean isValid4 = validator.validate("eldio@eldiosantos");
        boolean isValid5 = validator.validate("eldius@mailinator.com");
        boolean isValid6 = validator.validate("eldius@monumentmail.com");
        boolean isValid7 = validator.validate("eldius@1.2.3.4.5.c");
        boolean isValid8 = validator.validate(null);

        System.out.println(isValid);
    	System.out.println(isValid2);
    	System.out.println(isValid3);
    	System.out.println(isValid4);
    	System.out.println(isValid5);
    	System.out.println(isValid6);
    	System.out.println(isValid7);
    	System.out.println(isValid8);
     }

    public boolean validate(final String email){

        boolean isValid = false;

        try{
            Pattern p = Pattern.compile(emailValidationPattern);
            Matcher m = p.matcher(email);
            isValid = m.find();
        } catch (NullPointerException e){

        }
        return isValid;
    }
}