JavaHL bindings cleanup

I've been mucking around in the JavaHL bindings the past few days, and I
have the following suggestions:

1) Update the .cpp and .java files to use the same coding style that the
   main codebase uses.

2) Rearrange methods within classes in alphabetical order, with older
   methods first in the case of overloaded methods.

3) Implement older APIs as wrappers around newer APIs in the same class.
   (Currently, some are implemented as wrappers around newer APIs in
   other classes.)

I think this would improve maintainability substantially, but I wanted
to know what others thought. Comments? Objections?

-Hyrum