Some JDebug questions

[Niranjan Rao]

I use Emacs 20.7.1 and jde version 2.2.6 along with JDK1.2.2 and JPDA libs.

Basic debugger for me as is expected for many moons and jde versions and now
I want to try other features of the debugger. I could not locate any
documentation for this.

1. Set Conditional break point - when does this menu item become active. I
have always noticed this to be disabled
2. Evaluate expression - what kind of expression can be evaluated?
3. How to use watch for field. I tried using it and my java program that I
am trying to debug simply hangs. Sometimes emacs jumps across various buffer
before stopping in some buffer. I presume it's trying to show me something,
but don't know what.
4. I notice that many of the entities under display menu expect to have
object id. Is it possible to display object id in the local variables.
5. As I don't know much about multi threading, where can I find thread id.
Is there any way for debugger to show all the active threads along with the
ids. Show buffer/Threads option always results into a blank window.

Thanks for any pointers.

- Niranjan