Doubt on EL

Hi,
I have a doubts in EL.
Assume
<jsp:useBean class="foo.Dog" id="myDog">
<jsp:setProperty name="myDog" property="name" value=${list[1]}" />
</jsp:useBean>

Now, how does ${myDog.name and true} evaluate to false?

Can anybody explain me?

With regards,
Padma priya N.G.

What is the value of list[1]?

Hi,
It is not been given in the question. Can you tell how they have arrived at the answer?
Padma priya N.G.

Is that the entire question? I think there should be more to that question.

Which book/which question # please

Hi Priya,

It's very simple. Just common sense

In case of EL, all primitives are treated as Wrappers.
Did you get the answer to your query?

Regards,
Khushhal

Now, how does ${myDog.name and true} evaluate to false?

I am assuming that myDog.name evaluates to something that the EL (since the comparason operator 'and' is used) evaluates to false. So flase and true evaluates to false.

khushhal, would you explain further what you mean? I do not understand the point you are trying to make.
[ August 22, 2007: Message edited by: Michael Ku ]

Using the "and" operator, myDog.name is coerced to Boolean.
If it is null or "" then it will return false.
Otherwise, it will call Boolean.valueOf. Check the API for Boolean.valueOf, and you'll see that :
. you get true if the String passed is "true" (not case sensitive)
. you get false otherwise

So unless your dog's name is "True", the result will be "false".

Hi,
Thanks for the explanantion.
With regards,
Padma priya N.G.