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Spring Data JPA Interview Questions

Last Updated: 17 February 2026

Spring Data JPA interview questions are mainly asked to test your understanding of database operations using JPA + Hibernate in Spring Boot. These questions focus on entit...read more

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Java-Spring-Data-JPA

Java-Spring-JDBC

Overriding Spring Beans in Integration Tests: A Step-by-Step Implementation

Last Updated: 23 July 2025

In a Spring application, integration tests help validate the complete interaction between different components like services, repositories, and controllers. Sometimes, it ...read more

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Why Is Field Injection Not Recommended in Spring?

Last Updated: 23 July 2025

Dependency Injection (DI) is a core concept in modern software development frameworks, particularly in Spring. It facilitates loose coupling, better testability, and easie...read more

Properties in Spring's BeanFactoryPostProcessor

Last Updated: 23 July 2025

In Spring, the BeanFactoryPostProcessor interface is used to modify the application's bean definitions before the beans are fully initialized. This can be particularly use...read more

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Create Spring Prototype Scope Bean with Runtime Arguments

Last Updated: 23 July 2025

In the Spring Framework, beans are, by default, scoped as Singleton, meaning only one instance of the bean is created and shared throughout the application. However, there...read more

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Dynamically Register Spring Beans Based on Properties

Last Updated: 23 July 2025

The Spring Framework allows dynamic registration of beans at runtime based on configuration properties. This feature is handy when an application's behavior or configurati...read more

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How to Autowire a Spring Bean in a Servlet Filter?

Last Updated: 23 July 2025

In Spring Boot, filters can process incoming requests before they reach the controller and modify responses before sending them to the client. We often need to inject (aut...read more

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Injecting a Value into a Static Field in Spring

Last Updated: 23 July 2025

Injecting values into static fields in Spring Boot is a common challenge for developers working with dependency injection. Since static fields are tied to the class rather...read more

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Spring @Autowired Field Null – Common Causes and Solutions

Last Updated: 23 July 2025

When working with the Spring Framework, developers often face a common challenge which is @Autowired fields being null at runtime. This issue typically arises from misconf...read more

SpringRunner vs. SpringBootTest

Last Updated: 23 July 2025

In the Spring Framework, both @SpringBootTest and SpringRunner (replaced by @ExtendWith(SpringExtension.class) in JUnit 5) are used in testing, but they serve different pu...read more

Avoid Brittle Tests for the Service Layer in Spring

Last Updated: 23 July 2025

In software development, unit testing is crucial for verifying code correctness. However, tests that are too rigid or tightly coupled with implementation details can becom...read more

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Transaction Propagation and Isolation in Spring @Transactional Annotation

Last Updated: 10 November 2025

In Spring Framework, the @Transactional annotation provides a declarative approach for transaction management. It ensures that operations within a method are executed as a...read more

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Using Transactions for Read-Only Operations in Spring Boot

Last Updated: 23 July 2025

In database-driven applications, transactions are essential for maintaining data integrity and consistency. While transactions are typically associated with operations tha...read more

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Java-Spring-Boot

Spring - Event Handling

Last Updated: 23 July 2025

Event handling in Spring is a powerful mechanism that allows different components of a Spring application to communicate with each other in a loosely coupled manner. This ...read more

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Spring Boot - Dependency Injection and Spring Beans

Last Updated: 03 November 2025

Spring Boot simplifies RESTful API and microservice development by minimizing configuration. Its core concepts are Dependency Injection (DI) and Spring Beans. DI implement...read more

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Java-Spring-Boot

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