Cabcon India Interview Questions and Answers

Multithreading involves executing multiple threads concurrently within the same process, while asynchronous programming allows tasks to be executed independently of the main program flow.

• Multithreading involves multiple threads running concurrently within the same process, sharing resources and potentially causing synchronization issues.

• Asynchronous programming allows tasks to be executed independently of the main program flow, enabling non-blocking operations and improved pe...read more

Unit testing focuses on testing individual components in isolation, while integration testing focuses on testing how multiple components work together.

• Unit testing is done on individual units or components of a software application, such as functions or classes.

• Integration testing is done to test how different units or components work together as a whole system.

• Unit testing is usually done by developers during the development phase, while integration testing is typically done...read more

Object Oriented Programming is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.

• OOP focuses on creating objects that interact with each other to solve problems.

• Encapsulation is a key concept in OOP, where data is kept private within a class and accessed through public methods.

• Inheritance allows classes to inherit attributes and methods from other classes.

• Polymorphism enables objects to be t...read more

To write an API, define endpoints, request/response formats, authentication, and documentation.

• Define endpoints for different functionalities (e.g. GET /users, POST /users)

• Specify request and response formats (e.g. JSON)

• Implement authentication mechanisms (e.g. OAuth)

• Document the API using tools like Swagger or Postman

Multithreading in Java allows multiple threads to execute concurrently, improving performance and responsiveness.

• Multithreading allows multiple tasks to run concurrently within a single program

• Threads share the same memory space, allowing for efficient communication and data sharing

• Java provides built-in support for multithreading through the Thread class and Runnable interface

• Example: Creating a new thread by extending the Thread class or implementing the Runnable interface