TCS Java Microservice Developer Interview Questions and Answers

Q1. Internal working of Java Hash Map
Ans. 
Java HashMap is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values.
• HashMap uses an array of buckets to store key-value pairs.

• The key is hashed to find the index of the bucket where the value is stored.

• If multiple keys hash to the same index, a linked list or balanced tree is used to handle collisions.

• HashMap allows one null key and multiple null values.

• Example: HashMap
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Q2. Explain about SpringBootApplication annotation
Ans. 
SpringBootApplication annotation is used to mark the main class of a Spring Boot application.
• Used to enable auto-configuration and component scanning

• Combines @Configuration, @EnableAutoConfiguration, and @ComponentScan annotations

• Main class annotated with @SpringBootApplication is the entry point of the application
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Q1. Where do you see yourself after 5 years?
Ans. 
In 5 years, I see myself as a senior Java Microservice Developer leading a team of developers and working on cutting-edge technologies.
• Leading a team of developers in designing and implementing microservices architecture

• Working on advanced technologies like Kubernetes, Docker, and cloud services

• Contributing to open source projects and attending tech conferences

• Mentoring junior developers and sharing knowledge with the
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Q2. What are your strength and weakness?
Ans. 
My strength lies in my problem-solving skills and ability to work well in a team. My weakness is that I can be overly critical of my own work.
• Strength: Strong problem-solving skills

• Strength: Ability to work well in a team

• Weakness: Being overly critical of my own work
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Can clear if people put a little effort. Not much difficult.

Q1. Be sure on what technologies you mention in the resume
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Q1. HR can sometimes still ask technical questions or direct package talks.
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