File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
The moose likes Web Component Certification (SCWCD/OCPJWCD) and the fly likes BodyTag doubt Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login

Win a copy of Make it so: Java DB Connections & Transactions this week in the JDBC forum!
JavaRanch » Java Forums » Certification » Web Component Certification (SCWCD/OCPJWCD)
Bookmark "BodyTag doubt" Watch "BodyTag doubt" New topic

BodyTag doubt

Poonam Agarwal
Ranch Hand

Joined: May 12, 2008
Posts: 323
Regarding the processing of a BodyTag handler, in which of the following cases a BodyContent object will be "pushed" into the pageContext?
Select 1 correct option.

A.If the doStartTag() returns EVAL_BODY_INCLUDE
B.If the doStartTag() returns EVAL_BODY_BUFFERED
C.If the doStartTag() returns SKIP_BODY
D.If the doStartTag() DOES NOT return SKIP_BODY
E.A BodyContent object it is always created and pushed no matter what doStartTag() returns

The given answer is C, which I thought is Incorrect .

1. A tag handler that implements BodyTag is treated as one that implements IterationTag, except that the doStartTag method can return SKIP_BODY, EVAL_BODY_INCLUDE or EVAL_BODY_BUFFERED.

2. If EVAL_BODY_BUFFERED is returned, then a BodyContent object will be created (by code generated by the JSP compiler) to capture the body evaluation. The code generated by the JSP compiler obtains the BodyContent object by calling the pushBody() method of the current pageContext, which additionally has the effect of saving the previous out value

3. If EVAL_BODY_BUFFERED is returned, and the custom action element is not empty, setBodyContent() is invoked, doInitBody() is invoked, the body is evaluated, doAfterBody() is invoked, and then, after zero or more iterations, doEndTag() is invoked. If the custom action element is empty, only doStart() and doEndTag() are invoked.

please correct me if I am wrong

Thanks <br />Poonam Agarwal SCWCD 86%
Poonam Agarwal
Ranch Hand

Joined: May 12, 2008
Posts: 323
please check this thread.
I agree. Here's the link:
subject: BodyTag doubt
jQuery in Action, 3rd edition