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Interview Questions and Answers for 'Fidelity information services (fis)' - 4 question(s) found - Order By Newest

 Q1. What is abstraction ?Design
Ans. Abstraction is a process of hiding the implementation details and describing only the functionality to the user.

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   Like         Discuss         Correct / Improve     bstraction  oops concepts  oops principle     Asked in 22 Companies


 Q2. Can you write the code for implementing the one to many (student -> courses) relationship in hibernate?Hibernate
 This question was recently asked at 'Fidelity Information Services (FIS)'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve          Asked in 1 Companies


 Q3. Can you explain software design principles cohesion and coupling with an example?Design
 This question was recently asked at 'Fidelity Information Services (FIS)'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     cohesion  coupling     Asked in 1 Companies        frequent


 Q4. What is concurrent interface ?Core Java
Ans. ConcurrentMap is an interface and it is a member of the Java Collections Framework. It represents a Map that is capable of handling concurrent access to it without affecting the consistency of entries in a map. ConcurrentMap interface present in java.util.concurrent package.

HashMap operations are not synchronized, while Hashtable provides synchronization. Though Hashtable is thread-safe, it is not very efficient. To solve this issue, the Java Collections Framework introduced ConcurrentMap in Java 1.5.

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   Like         Discuss         Correct / Improve     Concurrent Interface   java.util.concurrent   Java 8 Concurrency   java concurrency   java 8     Asked in 1 Companies



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