Secure Meters Java Developer Interview Questions and Answers

Test, java, spring, microservices

Basics of apti like ratio , probablity etc..

Technical group discussion

Q1. About skills and resume
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Q1. What is a data structure?
Ans. 
A data structure is a way of organizing and storing data in a computer so that it can be accessed and modified efficiently.
• Data structures define the way data is stored, accessed, and manipulated in a computer program.

• Examples include arrays, linked lists, stacks, queues, trees, and graphs.

• Choosing the right data structure is crucial for optimizing the performance of algorithms and applications.
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Q2. What is a linked list?
Ans. 
A linked list is a data structure where each element is connected to the next element through pointers.
• Consists of nodes where each node contains data and a reference to the next node

• Can easily insert or delete elements without shifting other elements

• Examples: singly linked list, doubly linked list, circular linked list
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Q3. What is HashSet?

Ans. 

HashSet is a collection that does not allow duplicate elements and does not guarantee the order of elements.

• HashSet implements the Set interface in Java.

• It uses a hash table for storage.

• Example: HashSet set = new HashSet<>();

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