We have about 280 Java source code spread over 10 packages, and a bunch of txt and image files for a software project. Quite a few of them are not being used currently. They do not break the system, since we can just do a "javac //*.java" and "jar cmf metafile " to build up the executable jar which works. The question:
How do we find the class files never accessed, or image/txt files never used as resources in the jar?
It would be very hard to determine which image/txt files are never used, as they can be loaded in a variety of manners. A good bet for the image/txt files is to search for the name of each file in your code; if it is not there, it might not be being used; remember, the name of the file could be being generated programmatically and then loaded.
I recently had to do something similar for a game project. Because content could be brought in via a variety of means, removing unused content took a lot of trial and error.
There are plugins for eclipse that can find unused code.
It has been answered in How to find unused/dead code in java projects.
For the images, I would write a small program, pseudocode would look like:
//list image names
//for each image name
//find ocurrences in other files
