JTracker is a logic test tool for j2ee test...
    1. It supports method entry, exit, and the special line in
method's logic test.
    2. It supports displaying and modifying class field and local
variable's value.
    3. It supports remote test also.
JTracker is based on JPDA(Java Platform Debugger Architecture).It can
bring  sth. to project
i: It helps developers debug the server side component in the develop
phase, and get the debug information directly, instead of writing the
log code in source.
   ii: It helps developers perform logic tests for server side
components in the unit test phase, and allows users to evaluate the
test result by the JTracker test case and the test result data file.
   iii: It helps users locate bugs by loading a case in JTracker to
display the debug information.

http://jtracker.net