I have been reading a number of posts how to handle nulls in Coldfusion. Coldfusion doesnt naturally handle a "null" object returned from Java (as far as I can see, I have read a few posts and still no definate answer, so here goes for a couple of tips, just to keep myself sane and to remind myself.

There are two ways that you can handle a null and it depends what the returned object is, firstly lets handle nulls where the returned object might be something simple like a number or a string, the easiest method would be to simplify the variable, so you can trim the result, if it is null, you will get an empty string:

<cfif Len(myString)> #myString#

The second method is used if you return complex data, such as an Array, Structure or Java Objects themselves:

<cfif isDefined("UsersArray")>

If someone has a better method of managing returned nulls from Java, please let me know and I can update this post.