http://txt2re.com/index-java.php3?s=te.com%23st@test.com&15&31&10&30&14&-33&7&-32&11

Controller:

boolean IsError = false;

if (ServiceIsFirstNameCorrect) {
	setAttribute("firstNameIsError", "error message")
	IsError = true;
}
if (ServiceIsLastNameCorrect) {
	setAttribute("lastNameIsError")
	IsError = true;
}

...


if (IsError == false) {
	ServiceAddEmployee()
	setAttribute("SuccessMessage", "Name has been registered.")
	forward = "listemployee.jsp"
} else {
	forward = "add/edit.jsp"
}

([!a-zA-Z0-9_\.\+-]|[#a-zA-Z0-9_\.

http://regexr.com/


valid
9test@test.com
test9@test.com
test@9test.com
test@test9.com
te.st@test.com
!test@test.com
a@a.ab


test!@test.com
te.com#st@test.com
test@test-.com
te!st@test.com
test@test.com.ph
test@test.com
a@a.com

invalid
test@test.9com
test@test.com9
te@st@test.com
test.@test.com
test@.test.com
test@test..com
a@a.a
[existing email]

test@test.com.
.test@test.com
test@test.-com
test@test!.com
test@test.com!
test@!test.com
@a.com