Religare Senior Software Engineer Interview Questions and Answers

Q1. Java 8 features
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Q2. Transaction management in Java
Ans. 
Transaction management in Java involves managing database transactions to ensure data integrity and consistency.
• Use JDBC or JPA for transaction management

• Begin a transaction with 'beginTransaction()' method

• Commit the transaction with 'commit()' method

• Rollback the transaction with 'rollback()' method
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Q3. Api design using Spring boot
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Api design using Spring boot involves creating RESTful APIs with Spring framework for efficient communication between client and server.
• Use @RestController annotation to define RESTful web services

• Utilize @RequestMapping annotation to map HTTP requests to specific handler methods

• Implement request and response bodies using @RequestBody and @ResponseBody annotations

• Leverage Spring Boot's auto-configuration and embedded s
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Q1. Design patterns and its usages
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Design patterns are reusable solutions to common problems in software design.
• Design patterns help in creating flexible, maintainable, and scalable software.

• Some common design patterns include Singleton, Factory, Observer, and Strategy.

• Each design pattern has a specific purpose and can be applied in different scenarios.

• Understanding design patterns can improve code quality and make development more efficient.
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Q2. System design interview questions
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Basic python and data structure, time complexity of programs

Q1. Oops concepts in depth
Ans. 
Object-oriented programming principles for organizing and designing code.
• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Inheritance: Allowing a class to inherit properties and behavior from another class.

• Polymorphism: Ability for objects to take on multiple forms or types.

• Abstraction: Hiding complex implementation details and showing only necessary features.
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Q1. Role: Java+ React Full stack I had 2 rounds of interview so far. 1) First round was all about the fundamentals of react and java. It was a virtual one-o-one. Questions on java String, java classes and ...read more
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Q1. Already shared in my prev response
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Q1. Internal working of hashMap
Ans. 
HashMap is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values.
• HashMap internally uses an array of linked lists to store key-value pairs.

• When a key-value pair is added, the key is hashed to determine the index in the array where it will be stored.

• If multiple keys hash to the same index, a collision occurs and the key-value pairs are stored in a linked list at that index.

• To retri...read more
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Q2. Multithreading [Threads vs Processes]
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Threads are lightweight processes within a single process, sharing memory space. Processes are independent instances of a program.
• Threads share memory space, making communication between threads faster and more efficient.

• Processes have their own memory space, making them more isolated and secure.

• Threads are faster to create and terminate compared to processes.

• Processes are more stable and reliable, as a crash in one pr...read more
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Medium level DSA Questions were asked

Q1. Questions about Java8
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Q2. SQL queries and spring boot
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Q1. Current project
Ans. 
Currently working on developing a web-based project management tool for a tech startup.
• Utilizing React for front-end development

• Implementing Node.js for back-end functionality

• Integrating MongoDB for database management
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