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Listing classes loaded by application. [message #242534]

Fri, 07 December 2007 20:05

Eclipse User

Originally posted by: mail.cvkimball.com

My application requires classes from two large archives. I'll bet it uses
less than 10% of the classes in the archives. What tool or plugin do you
recommend to track which classes are actually loaded by the application,
so that I can prune the archives to reduce the application size?

Re: Listing classes loaded by application. [message #242762 is a reply to message #242534]

Tue, 11 December 2007 03:39

Eclipse User

Chris,

> My application requires classes from two large archives. I'll bet it
> uses less than 10% of the classes in the archives. What tool or plugin
> do you recommend to track which classes are actually loaded by the
> application, so that I can prune the archives to reduce the application
> size?
>

Here's a simple idea that may work for you: temporarily delete these
archives (or remove them from the project/compiler classpath), compile
your application and use the compiler error messages to find the classes
that are required by your code.

Note that this technique will work only for dependent classes known at
compile time (i.e., classes imported by your code). If your code uses
reflection to load other classes, then these will not be detected by the
compiler and you may get runtime errors.

My 2 cents...
Asaf

--
Asaf Yaffe
Eclipse TPTP Committer, JVMTI Profiler

Re: Listing classes loaded by application. [message #242863 is a reply to message #242534]

Tue, 11 December 2007 20:34

Eclipse User

Originally posted by: wegener.cboenospam.com

Chris Kimball wrote:
> My application requires classes from two large archives. I'll bet it
> uses less than 10% of the classes in the archives. What tool or plugin
> do you recommend to track which classes are actually loaded by the
> application, so that I can prune the archives to reduce the application
> size?
>
You can use verbose:class mode for the Java VM to get a list of all
classes loaded.

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