doStartTag() retun Type

[mallika shah]

Hello all,
here is a question,

public class ForumTagHandler extends TagSupport {
private int totalTopics = 0;
public int doStartTag() throws JspException {
if (totalTopics > 40)
return EVAL_BODY_AGAIN;
else
return SKIP_BODY; }}


options are -

1. The body of the tag is evaluated again.
2. The body of the tag is skipped.
3. SKIP_BODY is not a valid return code.
4. EVAL_BODY_AGAIN is not a valid return code.
5. JspException is not handled in the doStartTag() method.

The ans is given 4..
I dont understand why so..as the condition is false it should return skip_body ...

one more thing,isint Eval _body_Include a valid return type of doStartTag()?? as this class inherits this field from Tag Interface...

mallika

[Christophe Verré]

EVAL_BODY_AGAIN is a return value of doAfterBody(), not doStartTag()

[Tridib Samanta]

Hi Mallika,
EVAL_BODY_AGAIN is a valid return type for doAfterBody() method. Although in this case there will not be any compilation error, concepually you should not return EVAL_BODY_AGAIN from doStartTag().