there is a question on jWebPlus mock exam (it is on the CD that came with the book SCWCD exam study kit) about specifying listener classes in web.xml. I found that the answer I selected was wrong. My answer was :
<listener>
<listener-class>MyServletContextAttributeListener</listener-class>
<listener-class>MyHttpSessionListener</listener-class>
</listener>
the correct answer was :
<listener>
<listener-class>MyServletContextAttributeListener</listener-class>
</listener>
<listener>
<listener-class>MyHttpSessionListener</listener-class>
</listener>
I would like to know why the first one is wrong. thanks
<listener>
<listener-class>MyServletContextAttributeListener</listener-class>
<listener-class>MyHttpSessionListener</listener-class>
</listener>
the correct answer was :
<listener>
<listener-class>MyServletContextAttributeListener</listener-class>
</listener>
<listener>
<listener-class>MyHttpSessionListener</listener-class>
</listener>
I would like to know why the first one is wrong. thanks