Advance Java Programmer ( Generics and Collections)

Will be needing help in exam. Exam duration will be 1 hr. There will be 2 questions. The question will be based on generics, type erasure, type casting, upeer bound, lower bound or collections. A single .java source file will be provided which will contain detailed comments on what the code is expected to do and how you are expected to modify it. You will answer the question by uploading your modified .java file. In Question #2 for I will be asked to modify a method from the above code and provide a brief explanation of what variants would work / not work and why.