LDN - Luminis Developer Network

I am working on creating a new channel to update Data in Banner Database. Although getting data from Banner and displaying it on channel worked fine, I was not successful in doing the vice versa. On the Channel, I have configured a procedure which has an input box which takes the value and a submit button so that when user enters value and clicks on the submit action, I am unable to retrieve the value in the input box. In our university, this is the first time we are working on Custom Banner channels apart from using Banner Delivered Channels.

I am new to Luminis Portal. I have experience in Java/J2EE Development. I am working on deploying car file on the Luminis Server which has Java Files. What is the widely used procedure to deploy these Car Files. Eclipse with Ant or simple plain Javac? I am using eclipse and it compiles the files with Errors which gives me ClassnotFountExcception on Luminis Portal. I am adding library files to the build path to remove the compilation errors, but still getting ChainedRuntimeException.

And also can a Luminis Channel retrieve data from Banner Database directly?

Thanks
Ramya