About Question enthuware.jwpv6.2.621 :

[ets user]

i ran the example on tomcat 7.0.34 and it gave runtime exception as follows:

avax.el.ELException: The identifier [this] is not a valid Java identifier as required by section 1.19 of the EL specification (Identifier ::= Java language identifier). This check can be disabled by setting the system property org.apache.el.parser.SKIP_IDENTIFIER_CHECK to true.

Please what is the correct answer for the question

[admin]

Are you talking about ${requestScope.sessions.this}? This is an incorrect option.

[ETS User]

oh yeah sorry my bad.

[mtmmjava]

That
${not(sessionScope.length)}
doesn't work in glassfish. Throws IllegalStateException: PWC6243: Cannot access session scope in page that does not participate in any session

[admin]

You are right, this doesn't work anymore. The question has now been updated.

thank you for your feedback!
Paul.

[Jkike79]

Hi,
just want to notify a typo in the explanation of the 5th option.

It says "Ideally, the argument to the not function must be a booean."
but should be "Ideally, the argument to the not function must be a boolean."

Happy holidays
Barbara

[admin]

Fixed.

thank you for your feedback!
Paul.