Volkswagen Software Engineer Interview Questions and Answers

Snow offers various types of change management to track and manage modifications in software and systems.

• 1. Change Requests: Formal proposals for changes, e.g., adding a new feature.

• 2. Change Approvals: Review and authorization of change requests, e.g., a manager approving a new software tool.

• 3. Change Implementation: The actual execution of approved changes, e.g., deploying a new version of an application.

• 4. Chan...read more

Calculate the sum of all even numbers using Java Stream API without built-in methods.

• Create a list of integers to represent the numbers.

• Use the Stream API to filter even numbers: stream.filter(n -> n % 2 == 0).

• Map the filtered even numbers to their sum: reduce(0, Integer::sum).

• Example: For an array [1, 2, 3, 4, 5], the even numbers are [2, 4], and their sum is 6.

Various methods in RestApi include GET, POST, PUT, DELETE.

• GET - Used to retrieve data from the server. Example: GET /users

• POST - Used to send data to the server to create a new resource. Example: POST /users

• PUT - Used to update an existing resource on the server. Example: PUT /users/1

• DELETE - Used to delete a resource on the server. Example: DELETE /users/1

Annotation used in Spring framework to bind the HTTP request body to a method parameter.

• Used in Spring MVC to indicate that a method parameter should be bound to the body of the web request.

• Can be used with various data types like JSON, XML, etc.

• Helps in simplifying the process of handling request data in Spring applications.

IOC is a design pattern where control is inverted, while DI is a technique to achieve IOC by injecting dependencies into a class.

• IOC stands for Inversion of Control, where the control of flow is inverted from the traditional top-down approach.

• DI stands for Dependency Injection, a technique used to implement IOC by injecting dependencies into a class from an external source.

• IOC is a design principle, while DI is a ...read more

Type casting in Java allows conversion between different data types, enabling flexibility in variable usage.

• Java supports two types of casting: implicit (automatic) and explicit (manual).

• Implicit casting occurs when converting a smaller data type to a larger one, e.g., int to double: int num = 10; double d = num;

• Explicit casting is required when converting a larger data type to a smaller one, e.g., double to int: ...read more