Debugging Java Security Kerberos in Eclipse IDE

Question

Greetings,
I have been stuck on a Kerberos problem for a couple of weeks now.
In my efforts to find the root cause I wanted to follow the Kerberos java
code through using the Debugger in Eclipse. This is where my question to
the Eclipse forum comes from. The Kerberos classes, ie: Credentials.java
cannot be made to show up in the Debugger. I have played a great deal with
the Preferences and Attach Source options in an attempt to view the code
without success. The Debugger will show the Krb5LoginModule no problem if
I point the Attach Source function to src.zip. I've downloaded the source
for the security package that includes Credentials from www.java.sun.com.
It is called: j2sdk-sec-1_4_2-src-scsl.zip. This should be the correct
version being that I am running 1.4.2. This zip file contains the
Credentials class that I want to debug. Interestingly enough the class
list in the rt.jar includes ALL of the classes that I am interested in,
including the Credentials class. So I placed the security source code
inside the src.zip file so it is the all inclusive source archive. But
this also did not work. WHY can't I view the Credentials class through the
Debugger. ANY HELP IS APPRECIATED. It is simple to test for yourself it
you want. Just run the tutorial for JAAS. In there you will see a call to
the "login" method which will lead you down the path to the Credentials
class. The viewable Krb5LoginModule contains a call to
Credentials.acquireTGT. That is where my Eclipse debugger fails me.
Thanks.

Answer 1

Got it working! After a lot of trial and error, and searching
around
about JRun debugging, I've got what works for me.
Good Luck,
Thunder
Here is what I did:
* Right-click your Java server project, select Debug As ->
Debug...
* If it doesn't already have a new configuration, click the
'new'
toolbar button at the top left of the window.
* Name the debug configuration, and in the "main" tab set the
"main
class" to jrunx.kernel.JRun
* select the "arguments" tab
- Program Arguments (without the quotes): "start default"
- VM Arguments (without the quotes):
"-Dsun.io.useCanonCaches=false -Djmx.invoke.getters=true"
* PROBABLY NOT NEEDED (may work with Java 1.5 JRE)
- select the JRE tab and select 'Alternate JRE' and pick
a java 1.4.x JRE
* Select the Classpath tab and select User Entries in the
list, then
use 'Add External Jars' to add:
- ALL Jar files from C:\fds2\jrun4\lib
- ALL Jar files from C:\fds2\jrun4\servers\lib
- ALL Jar files from
C:\fds2\jrun4\servers\default\flex\WEB-INF\lib
* Click 'Apply' and 'Debug'