#1 Accept Objects as arguments and return types

[Teresa Lee]

Currently, the JavaGrader only supports primitive types and arrays of primitives types for the input arguments and primitive types for the return types.

The following is an example of a test case that the future JavaGrader should be able to handle:

Data Type of function argument(s) if needed: Student
Return type of function: Address

Class that will be involved in this change is the CTConverter.java.