Capgemini Software Engineer Intern Trainee Interview Questions and Answers

Design a solution with Java Spring boot, Spring Data, DB Integration

• Create a Spring Boot project with Spring Data dependency

• Configure the database connection in application.properties

• Create entity classes with JPA annotations

• Create repository interfaces extending JpaRepository

• Use repository methods in service classes

• Expose REST endpoints using @RestController

• Handle exceptions using @ControllerAdvice

• Secure endpoints usi...read more

Developed a real-time data processing system for a financial institution

• Implemented a distributed system using Apache Kafka and Apache Storm

• Designed a fault-tolerant architecture with multiple redundancy layers

• Optimized the system for high throughput and low latency

• Provided real-time monitoring and alerting using Grafana and Prometheus

Answering questions related to Spring Boot and core Java

• Spring Boot addons include Spring Security, Spring Data, and Spring Cloud

• Spring Boot is a framework for building standalone, production-grade Spring-based applications

• Ways of configuring a bean in Spring include XML configuration, Java-based configuration, and annotation-based configuration

• Core Java topics include OOP concepts, collections, multithreading, and exc

Bubble sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements and swaps them if they are in the wrong order.

• Start from the first element and compare it with the next element

• If the next element is smaller, swap them

• Repeat this process for all elements in the array

• Continue this process until no more swaps are needed

A program to print all prime numbers

• Take input from user for range of numbers

• Loop through the range and check if each number is prime

• Print the prime numbers

Hashmap is a data structure that stores key-value pairs and allows constant time access to values based on their keys.

• Hashmap uses a hash function to map keys to indices in an array.

• Collisions can occur when multiple keys map to the same index, which can be resolved using techniques like chaining or open addressing.

• Examples of hashmap implementations include Java's HashMap class and Python's dict type.

Inheritance is a mechanism in object-oriented programming where a new class is created by inheriting properties of an existing class.

• Inheritance allows code reuse and promotes code organization.

• The existing class is called the parent or superclass, and the new class is called the child or subclass.

• The child class inherits all the properties and methods of the parent class and can also add new properties and methods.

• For...read more