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Interview Questions and Answers for 'YuMe' - 2 question(s) found - Order By Newest

 Q1. What is a ConcurrentHashMap ?Core Java
Ans. ConcurrentHashMap is a hashMap that allows concurrent modifications from multiple threads as there can be multiple locks on the same hashmap.

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 Difference between concurrentHashMap and HashTable ?
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Very Frequently asked. Usually asked along with String Class related questions.
  Q2. What is an immutable class ?Core Java
Ans. Class using which only immutable (objects that cannot be changed after initialization) objects can be created.

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