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|Difference between TreeMap and HashMap ?|
|Difference beween HashSet and TreeSet ?|
|What is reflection ?|
|What is comparator interface used for ?|
|If I try to add Enum constants to a TreeSet, What sorting order will it use ?|
| Which of the following collections stores its elements in insertion Order ? |
|Which are the sorted collections ?|
|Which of the following collection maintain its elements in Natural Sorted order ?|
|What is a binary tree ?|
|What are the phases of the JSP life cycle ?|