Top 30 Spring Core, Spring MVC and Spring Security Interview Questions Answers

Spring Interview Question is one of the first things Java programmers should prepare before appearing on any Java or Spring interview. With the immense popularity of Spring frameworks like Spring MVC and Spring Boot in the Java world, the focus on Spring skills on interviews increases daily. For those who don't know, the Spring framework is one of the most famous structures for Java applications, which aims to simplify Java development. It revolutionized the Java development when it initially came with concepts of  Dependency Injection and Inversion of Control, which made writing a testable and maintainable Java application. 

3 Books and Courses to Learn RESTful Web Services using Spring and Java in 2025 - Best of Lot

Hello guys, if you know the Spring framework, then there is a good chance that you have heard about the classic Spring in Action book by Craig Walls. It's one of the best books to learn Spring, and many Java developers, including me, have learned Spring from that. But, even though the Spring in Action 5th Edition is one of the best books to learn Spring framework, it's just not enough to learn the intricacies of developing a modern, full-featured RESTful Web Service using Spring Framework. It does have a chapter on developing RESTful Web Services. It nicely explains concepts like @RestController, @ResponseBody, @ResponseStatus, HTTP message converters, content negotiation, but that barely touches the surface of developing a production-quality RESTFul Web Service.

Top 10 Free Core Spring, Spring MVC, and Spring Boot Courses for Beginners in 2025 - Best of Lot

Hello guys, if you want to learn Spring Framework, Spring MVC and Spring Boot then you are at the right place. In this post you will find the best free courses to learn Spring Framework, Spring MVC and Spring Boot in 2025. I have been sharing a lot of resources like books and courses recently and when I published my list of Top 5 courses to learn Spring and Hibernate, many of my readers asked about a similar list of free courses to learn Spring Framework like Core Spring, Spring MVC, Spring Security, and Spring Boot. That request was always back in my mind but I couldn't get time to put together a list, which I can share with you guys, but today is the day. In this list, I have compiled some of the best online free courses to learn Spring Framework from scratch, online at your own pace. 

10 Essential Spring MVC and REST Annotations with Examples for Java Programmers

Hello guys, welcome to my third article on exploring essential annotations from the Spring framework, the most popular framework for Java development. In the first article, I have shared some of the most useful Spring Framework annotations, which were based upon Core Spring functionalities like dependency injection, inversion of control, and configuration, and in the second article, you have learned about important Spring Cloud annotations like @EnableConfigServer, @EnableEurekaSever, and @EnableDiscoveryClient. Now that you know those essential Spring annotations it's time to move towards Spring MVC and REST, one of the most used parts of Spring Framework.

How to solve java.lang.NoClassDefFoundError: org/springframework/beans/factory/SmartInitializingSingleton in Spring Boot [Solved]

Problem:
I was trying to run a HelloWorld program using Spring Boot when I got this error:

Exception in thread "main" java.lang.IllegalStateException: Could not evaluate condition on org.springframework.boot.autoconfigure.PropertyPlaceholderAutoConfiguration#propertySourcesPlaceholderConfigurer due to internal class not found. This can happen if you are @ComponentScanning a springframework package (e.g. if you put a @ComponentScan in the default package by mistake)
at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:52)
at org.springframework.context.annotation.ConditionEvaluator.shouldSkip(ConditionEvaluator.java:92)
at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForBeanMethod(ConfigurationClassBeanDefinitionReader.java:174)
at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:136)

Difference between @Component, @Controller, @Service, and @Repository in Spring

Hello guys if you are wondering what is the difference between @Component, @Controller, @Service, and @Reposistory annotation in Spring Framework then you have come to the right place. In the past, I have shared 15 Spring Boot Interview Questions and 30 Spring MVC questions and in this article, I am going to answer the fundamental and popular Spring questions about @Component, @Controller, @Service, and @Repository annotation, but before we go into differences, let's understand the similarity first.

29 Spring Framework Interview Questions Answers for 5 years Experienced

Spring is one of the most popular framework and most widely used to develop Java Web application using MVC framework. Due to its immense popularity its expected from Java guys to know how to use Spring framework and how it works. Most of the Java development position uses Spring, Hibernate along with core Java and JEE web technologies like Servlet, JSP, and JSF. In this article, I will be sharing some frequently asked Spring interview question for Java JEE developers. It will contain questions from different Spring modules like Spring MVC, Spring core, the concept on which Spring is built e.g. IOC and DI and Spring security.

Top 6 Udemy Courses to Learn Spring Security in 2025 - Best of Lot

Security is one of the most important aspects of a modern web application, be it a Java web application, .NET, or writing using any other web technology. In the Java world, Spring Security rule the security space. It's one of the rare frameworks which provided many security features, like authentication, authorization, session management, remember me, and several other useful features out-of-the-box. Since there was no competition for Spring security and it does its job very well, it soon becomes the de-facto standard for implementing security in both Java web applications, REST APIs, and core Java applications. The rise of the Spring framework certainly helps it to cement its place as well.

Top 6 Udemy Courses to Learn Microservices with Java and Spring Boot in 2025 - Best of Lot

Hello guys, if you want to learn about Microservices architecture and how to create Microservices with Java using Spring Boot and Spring cloud framework and looking for the best online courses then you have come to the right place. Earlier, I have shared the best free Microservices courses for Java programmers and in this article, I am going to share the best online courses to learn Microservices with Java in 2025. Popularity of Cloud Computing has given an exponential rise to Microservices architecture because they go hand in hand. 

Top 7 Udemy Courses to Learn Spring Framework in 2025 - Best of Lot

Hello Java developers, if you want to learn Spring Framework and look for the best resources like books, online courses, and tutorials, you have come to the right place. Earlier, I have shared the free Spring Framework courses, best spring framework books, and best Spring Boot courses, and today, I Am going to share the best Spring Framework courses for Java developers. It is one of the world's most popular development frameworks for using enterprise Java. It is used by millions of developers for creating easily testable, reusable, and high-performance code, and it is also one of the essential skills for Java developers. If you are not familiar with the Spring framework, this should be the first thing you should learn in 2025. 

Top 10 Free Udemy Courses to become Fullstack Java Developer in 2025 - Best of Lot

Hello guys, if you want to become a full-stack Java developer and are looking for free online Java Full-stack development courses to kickstart your career, you have come to the right place. Earlier, I have shared the best Java full-stack development courses, and today, I will share 10 of the free online courses you can join to become a full-stack Java developer. The long journey of becoming a full-stack Java developer is not easy. You need to know all the details, from the front end to the backend. Not only these, but you also need to know how things function in databases and connectivity.

Top 5 Spring Framework Books for Java developers (Includes Spring Security and Spring Boot) in 2025 - Best of lot

Spring framework is one of the most famous structures in the Java world, which used to develop Java applications, both core Java and web application. It is also one of the most job-oriented skills for Java developers; hence many beginners and intermediate Java programmers try to learn the Spring framework on their own. Though there are some excellent Spring training courses available online, books are still the most popular and preferred way to learn Spring frameworks like Spring core, Spring Boot, Spring MVC, Spring Batch, or Spring Security.  I often receive queries for Spring book recommendations e.g., which Spring book is suitable for beginners, or which Spring book is good for intermediate and advanced developers, which book should I read to learn Spring boot, Spring Cloud, Spring Batch, or Spring security, etc.?

Is it Possible to take Spring Professional v5.0 Certification without the Official Training course?

Just a couple of years ago, It wasn't possible to take Spring Professional certification without a mandatory expensive training course from VMWARE, but now you can take Spring Certification without a training course. Yes, you read it correctly, it's now possible to become Spring certified developer without spending USD 3200 on mandatory Spring training, like the Core Spring training. For years, Pivotal, the company behind the Spring framework (now VMware) ensured that a Java developer can only get a Spring Professional certification by first going into a 4-day training run by Pivotal and its partner around the world.

How to Pass Spring Professional 5.0 Certification (VMware EDU-1202) in 2025 [UPDATED]

Hello guys, if one of your new year goals is to pass the Spring Developer Certification this year and wondering where to start then you have come to the right place. In this, article, I'll tell you how to prepare for Spring Professional v 5.0 certification (VMware EDU-1202)  and useful resources to pass the exam on the first attempt. If you have been self-preparing for Spring Professional 5.0 exam, then you might have struggled with which topics to prepare and which topics to leave out. I often receive questions like does Spring Boot is part of Core Spring certification? Will there be any questions from Spring Security and Spring Data? Does Spring Cloud also part of this exam or not? Unfortunately, there is no detailed, semester syllabus for VMware's Core Spring certification (VMware EDU-1202) 

How to Prepare for VMware EDU 1202 - Spring Professional v.5.0 Certification Exam in 2025 [UPDATED]

Hello guys, If you have been doing Java development then you may know the benefits of the Spring Framework that make it one of the best Java frameworks in the community. As an open-source framework, Spring offered the opportunity to build applications on the Java Enterprise Edition platform. First introduced in October 2002, Spring Framework obtained a recent stable release in the form of Spring v5.0 which brought things like Reactive programming and WebFlux. There is a huge demand for Java developers with Spring experience, in fact, Spring is often considered as the most important skill while hiring Java developers and many companies prefer to hire those candidates who have Spring Professional certification in their resume.

Top 5 Spring Certification Books and Courses for Java Developers in 2025 - Best of Lot

If you are preparing for Spring Professional certification (VMware EDU-1202) and looking for the best books, online courses, and practice tests for your preparation then you have come to the right place. As an author of a Java blog and a medium publication, I often receive questions about how to self-prepare for a technical certification like Spring Professional v5.0 certification from Pivotal, and which are the best books and courses to prepare for Spring Core certification? After answering a couple of my readers over Facebook chats and linking in, I decided to jot down my recommendations. Books, Online Courses, Study Guides, and Practice tests are some of the important resources to prepare for Spring certifications.

Top 5 Resources to become a Certified Spring Developer Professional in 2025

Ever since Pivotal has announced that Spring training is not mandatory for becoming a Certified Spring developer (now VMware EDU-1202), more and more experienced Java programmers who have been using Spring for years are preparing for this certification exam. This is obvious because the expensive Spring training, which cost around 32000 USD in the USA and most Western nations and about 50,000 INR in India, was the biggest hurdle in getting Spring certified and becoming a certified Spring professional. 

Top 10 Projects You can Build to Learn Spring Boot in 2025

Hello guys, I have always said that there is no better way to learn anything then actually doing it and its 100% true for Spring Boot, one of the popular Framework for Java application Development. In my 20 years of experience, I have found that the best way to learn Java and Spring Boot is building projects. When you build project, common task surface them like creating a List or sorting a List and then you research and learn. Those learning stuck and make you better developer. Building project also have many advantage like it allows you to use a lot of technologies like Git, IntelliJIDEA, Hibernate, APIs etc together to build something which you can showcase to your potential employer. 

Top 7 Spring Boot Online Courses for Beginners in 2025 - Best of Lot [UPDATED]

Hello guys, if one of your goals is to learn Spring Boot in 2025, and I have started working towards it. As I have talked about my 3 point action plan to learn new technology, the first step is to attend some online courses and start building from that. If you are not sure what is Spring Boot and why should you learn Spring Boot, then let me tell you that it should be the first Java framework you should learn in 2025. The Spring Boot makes it really easy to work with the Spring framework by removing all the starting hurdles concerning setup and configuration. In one word, it makes it possible to write a Spring-based Java application and run them like core Java applications, like from the primary method.

Top 10 Udemy Courses for Java Developers in 2025 - Best of Lot

Hello guys, if you are looking for best Udemy courses to learn Java and Spring Framework then you have come to the right place. Earlier, I have shred best Pluralsight courses for Java developers and best LinkedIn Courses for Java developers and today, I will share best Udemy courses for Java developers in 2025. Before we get to the important part and give you a list of the best courses that you can use to become expert Java programmers, let us start with the basics first. What is Java? In the most basic of terms, Java is a general-purpose, object-oriented, and class-based programming language that is known for having lesser implementation dependencies.