java examples: align the package declaration with the directory name
java examples: reorg the imports
gosh people, don't you use git status? How could you leak so much files around?
unavoidable cosmetic. Sorry for the noise
give this example default values for the arguments so that it can be run from eclipse
ignore all the *numerous* mpich3 tests
don't ignore eclipse project files so that  I can share them
share my eclipse settings