Renamed the test methods for quickSorter for easy distinguish.
Added CountDown class for queue manipulation demo.
1. Added test name to the console output.
2. Added deepCopyTest to prove the deep copy between Map collections.
Renamed the DeepCopy method to deepCopyTest.
Added Name class to check the Collections.Sort method by implementing
the Comparable interface.
Refinded the deepCopyTest by setting the type of Name field of User
class from String to Name.