Regular expression for Email validation in java

       public boolean validateEmail(String email) {

              if ((email != null)

                           && email.matches("^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@"

                                         + "[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$")) {

                     return true;

              }

              return false;

       }