listener tag in DD

[Deb Sadhukhan]

Is the order of listener and servlet tags matters in DD?

eg. is the following invalid?

<web-app>
    <servlet>
       .....
    </servlet>
    <listener>
      <listener-class>com.javaranch.LogListener</listener-class>
    </listener>
</web-app>

[Bassam Zahid]

Yes the order is necessary. <listener> element precedes the <servlet> element.

[Jose Esteban]

Originally posted by Bassam Zahid:
Yes the order is necessary. <listener> element precedes the <servlet> element.

Sorry Bassam, but I don't agree. According to Servlet spec 2.4, SRV.13.4:
"1. web-app Element
...
All sub elements under this element can be in an arbitrary order."

So the order doesn't matter under <web-app>

[Ganeshji Marwaha]

Originally posted by Jose Esteban:


Sorry Bassam, but I don't agree. According to Servlet spec 2.4, SRV.13.4:
"1. web-app Element
...
All sub elements under this element can be in an arbitrary order."

So the order doesn't matter under <web-app>

I agree with u Jose... I guess, this order thing has been made lenient starting from servlet spec 2.4. so, we can have elements within in any arbitary order... unless, u know that the order matters to u... like in the case of ordering of filter DD elements...

[Bassam Zahid]

Thanks Jose Esteban for indicating the error. It is really astonishing to know that order is not necessary. I think till Servlet 2.3 it was necessary. Am I right?

[James Christian]

HFS on page 174 shows example of listener tag at the end of the DD so it seems that Jose's the man. Order is not important.