Spring Ioc Interview Questions And Answers For Experienced – Since its release in October 2002, the Spring framework has become the leading application framework for Java developers. In fact, it ranks among the leading web development frameworks. So, choosing a career in spring framework is very useful.
There are many concepts in the source framework that require a working understanding to stay ahead of the game. If you’re preparing for a spring job interview, here are some spring interview questions you should know the answers to:
Spring Ioc Interview Questions And Answers For Experienced
Answer: Spring Framework has 20 modules. Each of them falls into one of the following categories:
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Answer: The Spring IOC container is located at the core of Spring Framework. Containers use dependency injection to manage a variety of spring application components.
The IOC is responsible for creating container objects, configuring them, interconnecting them, and managing their lifecycle. The container takes its instructions from the provided configuration metadata.
Provision of configuration metadata means Java annotation, Java code, or XML. Spring has two types of IoC containers:
Answer: Dependency injection specifies how objects are created instead of creating them directly. Therefore, this code does not include directly connected components and services.
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The configuration file contains information about which services are required. The IoC container is responsible for connecting components to the appropriate services. Dependent injection can be used in the following ways:
Answer: There are three ways to add configuration metadata to a source container, listed as follows:
Answer: A Spring IoC container is a provisioned, accelerated, managed, and wired object that forms the core of a Spring application. Spring beans are built with the configuration metadata provided to the Spring IOC container.
Answer: Since Spring is based on the concept of dependency injection, all classes, interfaces and their dependencies are stored in a file called Spring configuration file. This is an .xml file. The Spring container uses this file to control the lifecycle of the Spring bean. Beans are configured like this:
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Answer: An internal bean is a bean inside another bean scope. This concept is similar to inner classes in Java. An internal bean is defined as a target inside an external bean ID label.
Answer: Annotation-based container configuration instead of XML configuration. Instead of describing the bean strings, the developer passes the configuration to the component class through annotations in the appropriate item, field, or method declaration.
As the annotation cable is turned off by default, you need to turn it on before you can use it. This is done by configuring the element in the Spring configuration file.
A: Spring DAO support makes it easy to work reliably with data access technologies like JDBC, JDO, and Hibernate. Also, it allows coding without worrying about catching technology-specific exceptions and makes it easier to switch between persistence technologies.
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Answer: AOP, or object-oriented programming, is a programming technique that allows programmers to simulate actions that cut across separation of responsibilities or interrelated problems. Logging and business management are examples of interrelated concerns.
Answer: In Spring Framework, any operation that you handle at a particular integration point is called a query. Spring uses the AOP deprecation method to store a group of interceptors as “neighborhoods”, i.e. interceptors. Counseling can be in the following categories:
Answer: While a concern is an action that a developer wants to perform in a specific module of a Spring application, a cross-sectional concern is a concern that applies to the entire Spring application.
Answer: The Spring MVC framework is responsible for providing a model view controller architecture as well as ready-to-use components that can be used to develop flexible and loosely coupled web applications.
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In addition to providing loose coupling between these separated elements, the MVC pattern helps separate different aspects such as application logic, input logic, and UI logic.
Answer: DispatcherServlet is the core of the Source Web MVC framework and handles all HTTP requests as well as responses. After receiving the handler mapping input from the configuration file, the dispatcher sends the request to the controller.
After that, the controller returns the Model and View objects. The dispatcher then examines the server view resolver’s input in the configuration file and calls the specified view component.
A: Yes, there are many differences between the bean plant and the application environment. These are as follows:
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It provides additional functionality to Bean Factory, including integration with Spring AOP, data resource handling for i18n, and more.
Answer: Autopilot in Spring allows computer programmers to run beans automatically without having to write specific injection logic. Various AutoWriting modes include:
Answer: A JoinPoint is a point in program execution that represents the execution of a method. It also involves executing a method or handling exceptions.
Ans: In spring framework, the agent is called object creation after applying a query to a particular target object.
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Answer: Within the Spring framework, weaving is the process of combining an aspect with other application types or objects to create a constituent object. This is mostly done at runtime.
Answer: Spring Security is a separate module in the Spring framework that focuses on providing authentication and validation methods that can be used in Java applications.
Answer: A springboard is a name given to reduce boiler configuration by providing a pre-set frame. This helps Spring programs work with less code.
Answer: Active programming is non-obstructive and event-driven programming. It has a little theme. Back pressure is on key ingredients to ensure producers don’t overwhelm consumers.
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A: Source Web Flex is a dynamic web framework from Source. It acts as a springboard instead of MVC and provides a very large and unblockable group.
A: Mono and flexible types, both are Reactor of Spring Framework 5. Mono represents a single async value, while flux represents a stream of async values. Together, they help implement the publishing interface, which is well defined in the React Stream specification.
Answer: Executes Mono Publisher and executes Flex Publisher and returns N elements.
A: No, Spring 5 is not compatible with earlier versions of JAVA. Requires minimum JAVA 8 for compatibility.
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A: Yes, Spring Activation allows Spring MVC or Spring WebFlux in the same application, but with the condition that only one can run at a time. Because MVC is a blocking pattern, WebFlux is a non-blocking pattern, so they cannot be used together.
So, that concludes our list of spring interview questions. These questions will definitely help you with your spring visit.
Looking for more spring interview questions? Here is a great udemy course: Spring Interview Questions Preparation Course.
Here is a great book to help you prepare well for any programming interview: Cracking the Coding Interview: 189 Programming Questions and Solutions.
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With 5+ years of experience on various technical teams including C, C++, PHP, Python, SQL, Angular and AWS, Vijay holds a Bachelor’s degree in Computer Science and specializes in technical writing. Also, he insists on learning about content marketing and SEO tools. He has worked with various analytical tools for over eight years. He is working as an SEO manager.
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Disclosure: This page may contain affiliate links, which means we receive a commission if you click on the links and make a purchase. The Spring Framework was created in 2003 by Rod Johnson. It is designed to make the development of Java applications faster and easier. Safe for developers. Spring Framework is an open source, lightweight, easy-to-build framework that can also be considered a framework framework because it includes several frameworks such as Dependency Injection, Spring MVC, Spring JDBC, Spring Hibernate, Spring AOP, EJB, and JSF. etc. A key element of Spring is the ability to support application infrastructure. Spring focuses on providing a “pipeline” for enterprise-level applications, ensuring that developers can focus entirely on application-level business logic without unnecessary binding to a specific deployment environment. Applications built with Spring are more reliable, scalable, and simpler to build and maintain. Spring was created as a tool to help developers manage application business objects. Because of its wide range of features and flexibility, Spring has become the preferred framework for developing enterprise-class Java-based applications. In the next section, we’ll review the most frequently asked interview questions and answers to prepare you for spring-based interviews.
A source configuration file is basically an XML file that mainly contains information about classes and describes how these classes interact with each other. The XML configuration file is verbose and
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