JUnit test for class ReturnObjectImpl....
....Manually compile (ubuntu 12.04LTS) by ($ is a prompt):

$ javac -cp /usr/share/java/junit4.jar *.java

and run:

$ java  -cp .:/usr/share/java/junit4.jar org.junit.runner.JUnitCore ReturnObjectImplTest
JUnit version 4.8.2
..
Time: 0.006

OK (2 tests)
Write up ReturnObjectImpl