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Core java - Interview Questions and Answers for 'Amber road' - 2 question(s) found - Order By Newest

Very frequently asked. Favorite question in Walk in Drive of many Indian service companies.
  Q1. Difference between TreeMap and HashMap ?Core Java
Anonymous
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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Related Questions

  Which of the following collections stores its elements in insertion Order ?

a. HashMap
b. TreeMap
c. LinkedHashMap
d. LinkedMap
  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 ?


 Q2. Define CollectionCore Java2018-10-16 10:01:48

 This question was recently asked at 'Amber Road'.This question is still unanswered. Can you please provide an answer.


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Related Questions

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 Is this a valid initialization ? Explain.

Collection<Collection> collection = new LinkedList<LinkedList>();




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