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|Ans. They are different the way their elements are stored in memory. TreeMap stores the Keys in order whereas HashMap stores the key value pairs randomly.|
Sample Code for treemap
Sample Code for hashmap
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|Like Discuss Correct / Improve  java   collections   map   treemap   hashmap Asked in 31 Companies basic   frequent|
Try 1 Question(s) Test
| Which of the following collections stores its elements in insertion Order ? |
|What is comparator interface used for ?|
|Which of the following collection maintain its elements in Natural Sorted order ?|
|Which are the sorted collections ?|
|How can we reverse the order in the TreeMap ?|
|TreeMap orders the elements on which field ?|
|How TreeMap orders the elements if the Key is a String ?|
|Can we add heterogeneous elements into TreeMap ?|
|Will it create any problem if We add elements with key as user defined object into the TreeMap ?|