RupeeGO Interview Questions and Answers

SpringBootAnnotation is used to enable Spring Boot features in a Java application. @Controller is used for MVC pattern, @RestController is used for RESTful web services.

• SpringBootAnnotation is used to enable Spring Boot features like auto-configuration, component scanning, etc.

• @Controller is used for MVC pattern to handle web requests and return a view, while @RestController is used for RESTful web services to return data.

• @Controller is a specialization of @Component annotati...read more

Stream API in Java provides a way to process collections of objects in a functional style.

• Stream API allows for easy manipulation of collections using functional programming concepts like map, filter, and reduce.

• Example: List names = Arrays.asList("Alice", "Bob", "Charlie"); names.stream().filter(name -> name.startsWith("A")).forEach(System.out::println);

• Lambda expressions can be used with Stream API to define behavior to be applied to each element in the stream.

• Example: List...read more

Microservices are small, independent, and loosely coupled services that work together to form a larger application.

• Microservices are designed to be modular and scalable.

• Each microservice performs a specific task and communicates with other microservices through APIs.

• Microservices can be developed and deployed independently of each other.

• They offer flexibility, fault tolerance, and faster time-to-market.

• Examples of microservices include Netflix, Amazon, and Uber.

C++ is a compiled language while Java is an interpreted language.

• C++ is faster than Java due to its compilation process.

• Java has automatic garbage collection while C++ requires manual memory management.

• C++ supports multiple inheritance while Java only supports single inheritance.

• Java has a built-in exception handling mechanism while C++ requires manual exception handling.

• C++ allows for pointer arithmetic while Java does not.

• Java has a larger standard library than C++.

• C++ is o...read more

DBMS stands for Database Management System. It is a software system that manages and organizes data in a database.

• DBMS is used to create, modify, and delete databases and their objects.

• It provides a way to store, retrieve, and manipulate data efficiently.

• Examples of DBMS include MySQL, Oracle, SQL Server, and MongoDB.

React has several life cycle methods that are called at different stages of a component's life cycle.

• componentDidMount() is called after the component has been rendered to the DOM

• componentDidUpdate() is called after the component's updates are flushed to the DOM

• componentWillUnmount() is called before the component is removed from the DOM

Abstraction is the process of simplifying complex systems by focusing on essential details.

• Abstraction allows developers to hide unnecessary details and only expose relevant information.

• It helps in creating reusable code and improves code maintainability.

• For example, in object-oriented programming, a class is an abstraction that encapsulates data and behavior.

• Another example is the use of APIs, where developers interact with abstracted functions without knowing the underlying...read more