Capgemini Software Developer Interview Questions, Process, and Tips

On video call, based on DFS

Q1. Create rest controller
Ans. 
Creating a REST controller involves defining endpoints to handle HTTP requests and responses.
• Define a class annotated with @RestController

• Define methods within the class annotated with @RequestMapping to handle different HTTP methods and paths

• Use @GetMapping, @PostMapping, @PutMapping, @DeleteMapping annotations for specific HTTP methods

• Inject dependencies using @Autowired annotation if needed
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Q2. Coding question, on string
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Q1. What is GIL in Python append extend difference SQL coding questions projects worked on Challenges faced your problem solution
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Q2. What is Multithreading Deep copy shallow copy Merge two dictionaries
Ans. 
Multithreading is the ability of a CPU to execute multiple threads concurrently. Deep copy creates a new object with copies of the original object's data, while shallow copy creates a new object that references the original object's data. Merging two dictionaries combines the key-value pairs of two dictionaries into one.
• Multithreading allows for concurrent execution of multiple threads on a CPU.

• Deep copy creates a new ...read more
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Q1. Features of Java 8
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Java 8 introduced several new features including lambda expressions, streams, functional interfaces, and default methods.
• Lambda expressions allow you to write code in a more concise and readable way.

• Streams provide a way to work with collections of objects in a functional style.

• Functional interfaces are interfaces with a single abstract method, used for lambda expressions.

• Default methods allow interfaces to have method...read more
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Q2. Difference between Future & Completable Future
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Completable Future is an extension of Future in Java, providing more flexibility and control over asynchronous computations.
• Completable Future can be manually completed or cancelled, while Future cannot.

• Completable Future supports chaining of multiple asynchronous operations.

• Completable Future allows handling exceptions using exceptionally() method.

• Completable Future provides methods like thenApply(), thenAccept(), the...read more
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Q1. Microservices Design Pattern
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Microservices design pattern is an architectural style that structures an application as a collection of loosely coupled services.
• Each service is responsible for a specific business function and can be developed, deployed, and scaled independently.

• Communication between services is typically done through APIs, allowing for flexibility and resilience.

• Microservices promote agility, scalability, and maintainability in larg...read more
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Q2. About Project Structure
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Q1. Oops concept in java
Ans. 
Oops concept in Java refers to Object-Oriented Programming principles like Inheritance, Encapsulation, Polymorphism, and Abstraction.
• Inheritance allows a class to inherit properties and behavior from another class.

• Encapsulation involves bundling data and methods that operate on the data into a single unit.

• Polymorphism allows objects to be treated as instances of their parent class.

• Abstraction hides the implementation d...read more
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Q2. Collection and type of collection in jva
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Java provides various types of collections like List, Set, Map, Queue, etc.
• Java collections framework provides interfaces and classes to store and manipulate groups of objects.

• Some common types of collections in Java are ArrayList, LinkedList, HashSet, HashMap, PriorityQueue, etc.

• Collections in Java can be used to store and manipulate data in a structured way.

• Collections provide methods to add, remove, search, and iter
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Coding round in round 1st

30 min math nd code test

Q1. Regarding java 8
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Q2. Write code using Streams API
Ans. 
Using Streams API to write code for software development tasks.
• Use Stream.of() to create a stream from a list of elements

• Use filter() to apply a predicate to filter elements

• Use map() to transform elements in the stream

• Use collect() to convert the stream into a collection
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Q1. Arrays Linked lists
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DSA patterns , Arrays, Graphs, DP