🚀 go-pugleaf

I have a project consisting of 2 files.
c:\j1.4\bin\plagCheck\StringInfo.java
c:\j1.4\bin\plagCheck\StringManager.java

StringManager.java contains the main method.

When I compile them and run StringManager.class, I don't get any 
Exceptions.  It completes.

However, if I try to debug it by
I right click StringManager.java and click  "Debug using defaults"
and step into the program.  
As soon as it runs into 
this line of code:
stringsFound.add(new StringInfo(swPos, ewPos, str.substring(swPos,
ewPos + 1)));
It opens up a window displaying  java.lang.System  i'm forced to step
into that.  This brings up sun.misc.Launcher which brings up
java.lang.ClassNotFoundException which calls Exception. The list goes
on.

I've browsed previous posts and verified the following

1
Tools...Configure JDKs - JDK Home Path=c:\j1.4  (this is correct
so it can find c:\j1.4\bin\java.exe, and the rest)
I temporarily tried referring to the c:\jb9\jdk1.4  but it didn't fix
the problem.
2
Project..Project Properties..Paths
Every path(output,backup,working directory and source) are all 
set to c:\j1.4\bin\plagCheck
Project..Default project properties has the same settings.

3
Hovering the mouse over the files listed in the explorer pane,
verifies that all files are located in c:\j1.4\bin\plagCheck

4
I reinstalled jbuilder in c:\jb9 because i thought maybe it'd work if
the directory name is in 8.3 form.  Still didn't work.