ColdFusion 7 appears to be much better at passing null values to a java object. ColdFusion 6 however likes to block you from doing it, even when you want to.

I am tring to work with a java API that requires me to pass a null value to a method. Since CFMX 6 has no way of creating a null value I though I would use the Java API to concoct one. So I did something like this:

vector = CreateObject("java", "java.util.Vector");
vector.setSize(1);
someAPI.methodThatRequiresANull(vector.get(0));

This works on ColdFusion 7, but on ColdFusion 6 it throws an exception:

The system has attempted to use an undefined value, which usually indicates a programming error, either in your code or some system code.

Null Pointers are another name for undefined values.

This trick isn't really useful because in ColdFusion 7 you can create a null value by calling JavaCast and using "null" as the type.

For example:

someAPI.methodThatRequiresANull( JavaCast("null", "") );

Does anyone know of a way to pass nulls that works in CF 6? I know I could just write some java, but I want the solution to be pure CFML in this case.