Checkstyle rules applied to a couple of files

Major warnings fixed related to static final variable naming.

One warning ignored:
- Preserve Stack Trace in ThisPlugInDetector.java for throw a new exception in the below block:
<code>
           } catch (InterruptedException e) {
                throw new ExceptionInInitializerError("Problem getting class path entries from FindBugs");
</code>

(New exception is thrown in catch block, original stack trace may be lost)

What do you think of the above violation?