Created attachment 23493 [details]
NPE stacktrace

I tried it and it seems it works. My test code was

 Object o;
 String s = (String) o;

So closing as WORKSFORME. Please, provide always part of your code where problem
was found, as you cannot generalize that if it does not work in your particular
case, it does not work always. This will allow us to fix the problem instead of
closing because of insufficient information.

My code snippet where this happens:

...
	        BufferedReader in;
	        try {
	            in = new BufferedReader(new FileReader(portFile));
	        } catch (FileNotFoundException ex) {
	            ex.printStackTrace();
	        }
	        String check;
	        try {
	            check = in.readLine();
	        } catch (IOException ex) {
	            ex.printStackTrace();
	        }
...

on the line where check variable is initialized.

When I use the code, it still works.
But when I tried your steps to reporoduce it in jEdit.java file, I was able to
reproduce. Source contains 'tab' characters, which can cause the bug.

It was caused by bug in try wrapper, but the problem occurs later. Fixed.

Checking in src/org/netbeans/modules/javacore/TryWrapper.java;
/cvs/java/javacore/src/org/netbeans/modules/javacore/TryWrapper.java,v  <-- 
TryWrapper.java
new revision: 1.15; previous revision: 1.14
done

Reorganization of java component