EdgeVerve Systems Product Developer Interview Questions and Answers

There were 3 hackerrank questions two was easy level one medium.

Q1. Majorly focused on OOPS concepts.
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Q1. Describe concurrent hashmap
Ans. 
Concurrent hashmap is a thread-safe version of hashmap in Java, allowing multiple threads to access and modify it concurrently.
• ConcurrentHashMap was introduced in Java 5 to address the thread-safety issue of HashMap.

• It allows multiple threads to read and write to the map concurrently without causing a ConcurrentModificationException.

• It achieves thread-safety by dividing the map into segments, each guarded by a separate...read more
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Q2. What is the hashmap?
Ans. 
HashMap is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.
• HashMap is part of the Java Collections Framework.

• It uses hashing to store and retrieve elements efficiently.

• Each key in a HashMap must be unique.

• Example: HashMap map = new HashMap<>(); map.put("apple", 5);
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The interviewer asked one coding question and an SQL query, focusing on Java and object-oriented programming in depth, along with questions about Spring Boot and its annotations. Some managerial questions were also presented.

3 Coding Hackerrank Questions

1 Coding Hackerrank Question