GHX Junior Developer Interview Questions and Answers

Q1. Comparator and Comparable
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Q2. Spring Boot related question
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Be through with coding skills on technologies mentioned as per CV.

Q1. Asked questions on previous projects regarding role and responsibilities.
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Q1. What is HashMap?
Ans. 
HashMap is a data structure that stores key-value pairs and provides constant time complexity for basic operations.
• HashMap allows quick access to values based on their keys

• Keys must be unique and values can be duplicated

• HashMap is not thread-safe and requires synchronization for concurrent access

• Java's HashMap implementation uses hashing to distribute keys across buckets
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Q2. It’s a collection framework.
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Basic Aptitude questions were there which I think anyone can clear.

2 easy level programming questions were asked.

Q1. Introduction, background, interest, vision.
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Coding test consists of easy to medium difficulty problems.

Q1. HashMap in java
Ans. 
HashMap in Java 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 key-value pairs, allowing for O(1) retrieval time on average.

• Keys in a HashMap must be unique, but values can be duplicated.

• Example: HashMap map = new HashMap<>(); map.put("key1", 1); int value = map.get("key1");
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Basic coding questions

Q1. Question about current project.
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Q2. Basic Java, spring questions
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Q1. Basic HR questions
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Q1. Closures, hostings, react js, redux, hooks basic
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Q2. Html5, css3, basic javascript stuff
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