7 Common Interview Questions for the Spring (and Answers)
The Spring framework is a technology for making Java products for large businesses that can make the development process better. If you are interviewing for a job in application development, you might be asked about this technology. You might get the job if you know how to answer Spring interview questions well. This article talks about typical Spring interview questions and how to answer them well.
Interview questions and answers for jobs in the spring
Sample interview questions and answers about Spring can help you act out an interview so that you can learn how to do it with confidence. You might also do better at your interview if you went over what you know about Spring architecture and how to use it. During interviews, people often ask about Spring, such as:
- What does it mean for Spring?
- How can Spring help someone who writes code?
- A coworker is giving you trouble about how you use Spring. How would you handle this situation?
- What is Dependency Injection? What is Spring IoC?
- What are AOP and Spring MVC?
- How is Spring 5 different?
- What are the bare minimum settings you need to make an application with Spring MVC?
1.What does it mean for Spring?
Spring is one of the most important tools that web developers use. Your answer should show that you know how to use this framework. You can talk about the most important parts of the technology and describe what it is.
“The Spring framework is a popular tool for making Java Enterprise Edition web applications” (EE). Spring gives me a lot of useful add-ons I can use to build web apps. Because it works with other technologies that make things like security and database connections better, this technology can make it easier for me to build big, complicated apps.
Goals that are smart set the tone for spring. For instance, it supports a development model based on Plain Old Java Objects (POJOs), which is meant to improve programming practices and make the development process easier for users.
2.How does Spring help someone who writes code?
Spring is good for developers in many ways. Your answer should show how you can improve your development process and the things you make by using these benefits. List the main benefits of Spring, such as how it makes it easier to learn, saves money, and improves performance through Inversion of Control (IoC), less boilerplate code, and easier configurations.
“Using Spring has a lot of benefits, such as a shorter time to learn, lower costs, and better performance. Anyone can use spring as a technology. This gives me access to a lot of online tools that help me learn it, fix problems, and get better at it. It also saves money, which is a plus. For example, Spring’s modules make tasks easier and keep the framework from getting too heavy. Spring is a technology that is very light. Its basic version is only about 2MB, and it uses less resources to do more than other similar technologies.
Another big benefit of spring architecture is that it makes things run better. For example, Spring’s Aspect-Oriented Programming (AOP) helps me focus on the business logic by separating the business logic from the services that the technology provides. Its Inversion of Control (IoC) method builds independent components, makes objects get rid of dependencies, stops objects from looking for dependencies, and connects components with loose coupling. This is another part of the building that makes it work better.
For example, Spring’s IoC makes unit testing faster because there are fewer direct links between the classes used to implement resources and the business logic. This makes it easy and fast for me to write test configurations and put them into mock beans. With parts like the Java DataBase Connectivity Template class, which lets me get rid of all the useless code in Java DataBase Connectivity programming, Spring also cuts down on code that isn’t needed.
Spring also has a lot of great services that are easy to set up. For example, it gives me a great interface for transaction management that I can scale to fit different global or local transactions, exception handling for translating exceptions that are specific to a programming technology, like Hibernate or Java DataBase Connectivity, and other services that help a development process with fewer configurations.
3. A coworker is giving you trouble about how you use Spring. How would you handle this situation?
If you want to work in web development, you should know how to solve problems and get along with other people. Your answer should show that you can deal with problems and get along with other people. You can also show how good a leader you are by how you answer.
Example: “The first thing I would do is use my ability to actively listen to figure out why my coworker was being rude. I would ask to talk to my boss, tell him what was going on, and ask for advice. I would look into what my coworker says about my use to see if it is true. Developer forums, online Spring resources, and people I know in the business world would be my sources of information.
Next, I would look at my professional responsibilities, reevaluate how I use Spring, and make the best decision I could about what to do next. At this point, my main goal is to keep working with my coworker. I would set up a meeting with my coworker, explain my decision in a diplomatic way, and listen to what he or she had to say.
4. Tell me what Dependency Injection is and how the Spring IoC container works.
Dependency injection and the Spring IoC container have a lot to do with Spring. To use Spring well, a candidate must have enough technical knowledge about its main ideas and parts. You can give a technical explanation for everything.
“Dependency Injection is one of the most important ideas in Spring. It explains how the IoC method is used. According to this idea, objects are described instead of made, and the services that components need are written about in the configuration file instead of being connected to the components directly through code. During runtime, the IoC container connects the components and services we’ve been talking about in a loose way.
Dependency Injection comes in two types: Setter-Based dependency injection and Constructor-Based dependency injection. The IoC container is the program that runs the IoC method. IoC containers make, set up, connect, and take care of objects. It injects objects with dependencies during runtime to achieve dynamic binding and loose coupling.
Dependency Injection and the IoC container both help me improve the performance of my apps because there are no hard-coded dependencies, which makes them easier to maintain and add to.
5. Tell me more about Spring AOP and Spring MVC.
Spring AOP and Spring MVC are two important frameworks for Spring. Your answer should show you know when and how to use them.
Example: “AOP, which stands for “aspect-oriented programming,” is a way to write code. It lets you break up tasks that affect more than one area of responsibility, like transaction management, logging, or data validation, into smaller pieces. These tasks are called “crosscutting concerns.” AOP is different from object-oriented programming because the code is broken up into smaller pieces using aspects instead of classes. With Spring AOP, I can spend less time on cross-cutting issues and more time on business logic.
Spring MVC, which stands for Spring Model-View-Controller, is a framework that has all the features of the MVC technology. IoC is used by this framework to keep business objects and controller logic cleanly separate. Because of this, I like to build web apps with Spring MVC instead of easily integrating Spring with other MVC frameworks, such as Struts.
6. What is different about Spring 5?
If you want to work in application development, you should know a lot about how technology changes and what’s new. Show the interviewer that you are up-to-date on what’s happening in the world. You can find the updates and keep track of what’s good about them for your use.
“Spring 5 is different in a number of ways.” To run Spring 5, I need at least Java 8, but older versions of Java worked with earlier versions of Spring. The Core Container now supports the Component index instead of scanning the classpath, which is a big change. With this update, it takes about 25 seconds less time for each of my big Spring projects to start up.
Spring 5’s support for the programming language Kotlin is also a step in the direction of supporting functional programming. Like Java, this goes in the same direction. Now I can use Kotlin to make web-based APIs or to register my Spring beans.
Spring MVC, which stands for Spring Model-View-Controller, is a framework that has all of the features of the MVC technology. IoC is used by this framework to keep business objects and controller logic cleanly separate. Because of this, I like to build web apps with Spring MVC instead of easily integrating Spring with other MVC frameworks, such as Struts.
7.What are the bare minimum settings you’d use for a Spring MVC application?
A person who makes applications needs to know how to use Spring in real life. Your answer should show how good a language user you are. You can make a list of the basic settings your Spring MVC application needs.
Example: “You need to add spring-context and spring-web MVC as dependencies. Next, I have to set up the DispacherServlet in the web.xml file so that the Spring container can handle any requests. Then, I would use the configuration file for the Spring beans to define the beans and set up any annotations that my application would need. For view pages, you need to set up the view resolver. I would also have to define a Controller class with request mappings in order to handle client requests.”
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