30+ Boundary Mvc Framework Interview Questions Answers For Java/Jee Developers
Spring Interview Questions Answers
Spring Interview Question is i of the get-go things Java programmer should ready earlier appearing on whatever Java or Spring interview. With the immense popularity of Spring frameworks similar Spring MVC as well as Spring Boot inwards Java world, focus on Spring skills on interviews are increasing 24-hour interval past times day. For those who don't know, the Spring framework is i of the most pop frameworks for Java applications, which aims to simplify Java development. It revolutionized the Java evolution when it initially came alongside concepts of Dependency Injection as well as Inversion of Control, which made writing testable as well as maintainable Java application.
But Spring framework but didn't halt there, it also provides useful API to Java programmers. The best thing is that Spring has been kept evolving since its inception as well as addressing Java developers describe of piece of occupation concern inwards dissimilar areas.
Spring framework is divided into many dissimilar modules similar Spring MVC, Spring Integration, Spring Batch, Spring LDAP, Spring Security, Spring Boot, Spring Clod as well as several other modules, which focus on a exceptional area.
For example, Spring Boot tries to arrive fifty-fifty easier to usage Spring framework past times reducing the amount of configuration y'all demand to set inwards for Spring itself. Spring Cloud is evolving to acquire the best framework for developing cloud-based Java frameworks as well as Microservices, which is demand of future, as well as Spring Security has established itself equally the go-to framework for safety Java spider web applications.
Based on your piece of occupation experience, Interviewer tin inquire questions from centre Spring or these modules. That's why, piece preparing the Spring interview enquiry focus on Spring core, Spring Security, as well as Spring API, these are principal areas from where interviewer inquire questions.
If y'all conduct hold working sense inwards Spring-based Java projects, y'all tin easily respond most of these Spring questions from several Java interviews, but if y'all don't conduct hold whatever prior sense as well as but learning Spring, I advise y'all to pop off through Spring Framework 5: Beginner to Guru course on Udemy to larn Spring fundamentals earlier attempting these questions.
1) What is the Spring framework? Why Java programmer should usage Spring framework? (answer)
Very mutual Spring interview question, Spring is a framework which helps Java programmer inwards development. Spring provides Dependency Injection as well as IOC container, Spring MVC catamenia as well as several useful API for Java programmer.
2) What is the default reach of edible bean inwards Spring framework? (answer)
The default reach of a Spring edible bean is the Singleton scope as well as inwards the spider web application default reach of a saltation edible bean is asking scope. Singleton edible bean way the same instance of a edible bean is shared alongside all other beans, piece asking reach way a edible bean is move solely for a request.
3) Does Spring singleton beans are thread-safe?
No, Spring singleton beans are non thread-safe. Singleton doesn't hateful edible bean would be thread-safe.
4) What is Dependency Injection blueprint pattern? (answer)
Dependency Injection is i of the blueprint pattern, which allows injecting dependency on Object, instead of object resolving the dependency.
5) What is Inversion of Control concept, how does Spring back upward IOC? (answer)
The unproblematic pregnant of inversion of the command way that forthwith the framework, Spring is responsible for creating objects, wiring dependencies as well as managing their life-cycle instead of a developer, which was the instance before. That's where command is inverted from developer to framework.
6) What is Spring MVC? Can y'all explicate How i asking is processed? (answer)
Spring MVC is a framework to prepare Java spider web application. It provides an implementation of MVC or Model View Controller architecture which is built on separation of concerns as well as makes the evolution of Java spider web application easy. In guild to usage this inwards your project, y'all demand to larn Spring as well as include its JAR file.
Spring MVC framework too supplies inbuilt stance resolver for selecting views. See Spring Master Class - Beginner to Expert to larn to a greater extent than nearly how Spring MVC internally works.
7) What is View Resolver pattern? how it industrial plant inwards Spring MVC
View Resolver pattern is a J2EE pattern which allows a spider web application to dynamically conduct it's stance engineering scientific discipline e.g. HTML, JSP, Tapestry, JSF, XSLT or whatever other stance technology.
In this pattern, View resolver holds mapping of dissimilar views, controller render get upward of the view, which is thence passed to View Resolver for selecting an appropriate view.
8) How do y'all create a controller inwards Spring? @Controller vs @RestController? (answer)
Influenza A virus subtype H5N1 controller is nada but a class, too known equally a edible bean inwards Spring terminology. If y'all are using notation thence y'all tin create controller past times using @Controller annotation.
For RESTful spider web service y'all tin too create REST controllers past times using the @RestController annotation as well as inwards that case, y'all don't demand to usage the @ResponseBody notation explicitly to say Spring how it needs to respond.
Btw, if y'all are interested inwards learning to a greater extent than nearly how to prepare RESTful Web Service using Spring framework, I advise taking a await at the REST alongside Spring course by Eugen Paraschiv of Baeldung. It's i of the comprehensive course of written report which non solely covers basics but too advanced concept similar versioning, testing, as well as deploying REST API inwards production.
9) What types of dependency injection is supported past times Spring Framework? When do y'all usage Setter as well as Constructor Injection, pros as well as cons?
There are two types of dependency injection supported past times Spring, constructor based injection, as well as setter-based injection.
Both types conduct hold their ain advantages as well as disadvantages, y'all should usage Constructor injection when an object's dependencies are non optional as well as they must move initialized alongside their dependencies.
Also, usage constructor injection if the guild of initialization or dependency matters because inwards Setter based injection y'all cannot impose whatever order. Use setter injection when dependencies are optional. See the difference betwixt setter vs constructor injection inwards Spring for a to a greater extent than detailed answer.
10) Can nosotros usage to a greater extent than than i configuration file for our Spring project?
Yes, y'all tin usage equally many equally y'all want, all y'all demand to is import them inwards the principal Spring configuration file which y'all volition charge from your program.
11) What is Spring Security?
Spring safety is a projection nether the saltation framework umbrella, which provides back upward for safety requirements of venture Java projects.
Spring Security formerly known equally aegis safety provides out of box back upward for creating login screen, Remember me cookie support, securing URL, authentication provider to authenticate the user from the database, LDAP as well as inwards memory, Concurrent Active Session administration back upward as well as much more.
In guild to usage Spring safety inwards a Spring MVC based project, y'all demand to include spring-security.jar as well as configure it inwards the application-Context-security.xml file, y'all tin get upward it whatever y'all want, but brand certain to furnish this to ContextLoaderListener, which is responsible for creating Spring context as well as initializing dispatcher servlet. You tin farther run into Learn Spring Security Certification Class larn to a greater extent than nearly authentication, authorization, as well as session command using Spring Security.
12) What is the divergence betwixt ApplicationContext as well as BeanFactory inwards Spring framework? (answer)
13) How do y'all telephone telephone a stored physical care for past times using the Spring framework? (answer)
14) What do the JdbcTemplate as well as JmsTemplate shape offering inwards Spring? (answer)
They offering a criterion way to usage JDBC as well as JMS API, without writing the boiler code required to piece of occupation alongside those API.
15) How do y'all command concurrent Session on Java spider web application using Spring Security? (answer)
You tin usage Spring Security to command a set out of active session inwards Java spider web application. Spring safety framework provides this characteristic out of the box as well as when enabled, a user tin solely conduct hold i active session at a time.
16) Explain Spring MVC catamenia alongside a unproblematic representative similar starting from Container receives a asking as well as forrad to your Java application?
I conduct hold explained to them from start to goal inwards my article how does Spring MVC industrial plant internally article, y'all tin cheque that for a detailed answer.
17) What is the divergence inwards Spring MVC as well as Spring core?
The Spring MVC is component subdivision of the Spring framework which helps y'all to prepare Java spider web application using model spider web controller pattern, piece Spring Core provides the Dependency injection as well as Inversion of Control. The Spring Container is component subdivision of Spring core.
Both functionalities come upward inwards dissimilar JAR files. If y'all are developing but a centre Java application using Spring thence y'all but demand Spring Core but if y'all are developing Web application thence y'all demand spring-mvc.jar equally well. See answer)
24) Difference betwixt @SpringBootApplication as well as @ContextConfiguration notation inwards Spring Boot? (answer)
25) What is the usage of DispatcherServlet inwards Spring MVC? (answer)
26) What is the role of InternalResourceViewResolver inwards Spring MVC (answer)
27) What is the divergence betwixt @Autowired as well as @Inject notation inwards Spring? (answer)
28) Difference betwixt @RequestParam as well as @PathVariable inwards Spring MVC? (answer)
Spring Interview Question is i of the get-go things Java programmer should ready earlier appearing on whatever Java or Spring interview. With the immense popularity of Spring frameworks similar Spring MVC as well as Spring Boot inwards Java world, focus on Spring skills on interviews are increasing 24-hour interval past times day. For those who don't know, the Spring framework is i of the most pop frameworks for Java applications, which aims to simplify Java development. It revolutionized the Java evolution when it initially came alongside concepts of Dependency Injection as well as Inversion of Control, which made writing testable as well as maintainable Java application.
But Spring framework but didn't halt there, it also provides useful API to Java programmers. The best thing is that Spring has been kept evolving since its inception as well as addressing Java developers describe of piece of occupation concern inwards dissimilar areas.
Spring framework is divided into many dissimilar modules similar Spring MVC, Spring Integration, Spring Batch, Spring LDAP, Spring Security, Spring Boot, Spring Clod as well as several other modules, which focus on a exceptional area.
For example, Spring Boot tries to arrive fifty-fifty easier to usage Spring framework past times reducing the amount of configuration y'all demand to set inwards for Spring itself. Spring Cloud is evolving to acquire the best framework for developing cloud-based Java frameworks as well as Microservices, which is demand of future, as well as Spring Security has established itself equally the go-to framework for safety Java spider web applications.
Based on your piece of occupation experience, Interviewer tin inquire questions from centre Spring or these modules. That's why, piece preparing the Spring interview enquiry focus on Spring core, Spring Security, as well as Spring API, these are principal areas from where interviewer inquire questions.
If y'all conduct hold working sense inwards Spring-based Java projects, y'all tin easily respond most of these Spring questions from several Java interviews, but if y'all don't conduct hold whatever prior sense as well as but learning Spring, I advise y'all to pop off through Spring Framework 5: Beginner to Guru course on Udemy to larn Spring fundamentals earlier attempting these questions.
Spring Interview Questions as well as Answers
Now that y'all know the importance of Spring Framework for Java developers as well as ready to conduct hold on Spring questions on your adjacent interview, let's run into but about oft asked questions on the Spring framework on Java interviews:1) What is the Spring framework? Why Java programmer should usage Spring framework? (answer)
Very mutual Spring interview question, Spring is a framework which helps Java programmer inwards development. Spring provides Dependency Injection as well as IOC container, Spring MVC catamenia as well as several useful API for Java programmer.
2) What is the default reach of edible bean inwards Spring framework? (answer)
The default reach of a Spring edible bean is the Singleton scope as well as inwards the spider web application default reach of a saltation edible bean is asking scope. Singleton edible bean way the same instance of a edible bean is shared alongside all other beans, piece asking reach way a edible bean is move solely for a request.
3) Does Spring singleton beans are thread-safe?
No, Spring singleton beans are non thread-safe. Singleton doesn't hateful edible bean would be thread-safe.
4) What is Dependency Injection blueprint pattern? (answer)
Dependency Injection is i of the blueprint pattern, which allows injecting dependency on Object, instead of object resolving the dependency.
5) What is Inversion of Control concept, how does Spring back upward IOC? (answer)
The unproblematic pregnant of inversion of the command way that forthwith the framework, Spring is responsible for creating objects, wiring dependencies as well as managing their life-cycle instead of a developer, which was the instance before. That's where command is inverted from developer to framework.
6) What is Spring MVC? Can y'all explicate How i asking is processed? (answer)
Spring MVC is a framework to prepare Java spider web application. It provides an implementation of MVC or Model View Controller architecture which is built on separation of concerns as well as makes the evolution of Java spider web application easy. In guild to usage this inwards your project, y'all demand to larn Spring as well as include its JAR file.
Spring MVC framework too supplies inbuilt stance resolver for selecting views. See Spring Master Class - Beginner to Expert to larn to a greater extent than nearly how Spring MVC internally works.
7) What is View Resolver pattern? how it industrial plant inwards Spring MVC
View Resolver pattern is a J2EE pattern which allows a spider web application to dynamically conduct it's stance engineering scientific discipline e.g. HTML, JSP, Tapestry, JSF, XSLT or whatever other stance technology.
In this pattern, View resolver holds mapping of dissimilar views, controller render get upward of the view, which is thence passed to View Resolver for selecting an appropriate view.
8) How do y'all create a controller inwards Spring? @Controller vs @RestController? (answer)
Influenza A virus subtype H5N1 controller is nada but a class, too known equally a edible bean inwards Spring terminology. If y'all are using notation thence y'all tin create controller past times using @Controller annotation.
For RESTful spider web service y'all tin too create REST controllers past times using the @RestController annotation as well as inwards that case, y'all don't demand to usage the @ResponseBody notation explicitly to say Spring how it needs to respond.
Btw, if y'all are interested inwards learning to a greater extent than nearly how to prepare RESTful Web Service using Spring framework, I advise taking a await at the REST alongside Spring course by Eugen Paraschiv of Baeldung. It's i of the comprehensive course of written report which non solely covers basics but too advanced concept similar versioning, testing, as well as deploying REST API inwards production.
9) What types of dependency injection is supported past times Spring Framework? When do y'all usage Setter as well as Constructor Injection, pros as well as cons?
There are two types of dependency injection supported past times Spring, constructor based injection, as well as setter-based injection.
Both types conduct hold their ain advantages as well as disadvantages, y'all should usage Constructor injection when an object's dependencies are non optional as well as they must move initialized alongside their dependencies.
Also, usage constructor injection if the guild of initialization or dependency matters because inwards Setter based injection y'all cannot impose whatever order. Use setter injection when dependencies are optional. See the difference betwixt setter vs constructor injection inwards Spring for a to a greater extent than detailed answer.
10) Can nosotros usage to a greater extent than than i configuration file for our Spring project?
Yes, y'all tin usage equally many equally y'all want, all y'all demand to is import them inwards the principal Spring configuration file which y'all volition charge from your program.
11) What is Spring Security?
Spring safety is a projection nether the saltation framework umbrella, which provides back upward for safety requirements of venture Java projects.
Spring Security formerly known equally aegis safety provides out of box back upward for creating login screen, Remember me cookie support, securing URL, authentication provider to authenticate the user from the database, LDAP as well as inwards memory, Concurrent Active Session administration back upward as well as much more.
In guild to usage Spring safety inwards a Spring MVC based project, y'all demand to include spring-security.jar as well as configure it inwards the application-Context-security.xml file, y'all tin get upward it whatever y'all want, but brand certain to furnish this to ContextLoaderListener, which is responsible for creating Spring context as well as initializing dispatcher servlet. You tin farther run into Learn Spring Security Certification Class larn to a greater extent than nearly authentication, authorization, as well as session command using Spring Security.
12) What is the divergence betwixt ApplicationContext as well as BeanFactory inwards Spring framework? (answer)
13) How do y'all telephone telephone a stored physical care for past times using the Spring framework? (answer)
14) What do the JdbcTemplate as well as JmsTemplate shape offering inwards Spring? (answer)
They offering a criterion way to usage JDBC as well as JMS API, without writing the boiler code required to piece of occupation alongside those API.
15) How do y'all command concurrent Session on Java spider web application using Spring Security? (answer)
You tin usage Spring Security to command a set out of active session inwards Java spider web application. Spring safety framework provides this characteristic out of the box as well as when enabled, a user tin solely conduct hold i active session at a time.
16) Explain Spring MVC catamenia alongside a unproblematic representative similar starting from Container receives a asking as well as forrad to your Java application?
I conduct hold explained to them from start to goal inwards my article how does Spring MVC industrial plant internally article, y'all tin cheque that for a detailed answer.
17) What is the divergence inwards Spring MVC as well as Spring core?
The Spring MVC is component subdivision of the Spring framework which helps y'all to prepare Java spider web application using model spider web controller pattern, piece Spring Core provides the Dependency injection as well as Inversion of Control. The Spring Container is component subdivision of Spring core.
Both functionalities come upward inwards dissimilar JAR files. If y'all are developing but a centre Java application using Spring thence y'all but demand Spring Core but if y'all are developing Web application thence y'all demand spring-mvc.jar equally well. See answer)
24) Difference betwixt @SpringBootApplication as well as @ContextConfiguration notation inwards Spring Boot? (answer)
25) What is the usage of DispatcherServlet inwards Spring MVC? (answer)
26) What is the role of InternalResourceViewResolver inwards Spring MVC (answer)
27) What is the divergence betwixt @Autowired as well as @Inject notation inwards Spring? (answer)
28) Difference betwixt @RequestParam as well as @PathVariable inwards Spring MVC? (answer)
29) Difference betwixt @Component, @Service, @Controller, as well as @Repository annotations inwards Spring MVC? (answer)
30) How to swallow RESTful Web Service using Spring MVC? (answer)
31) Difference betwixt @SpringBootApplication as well as @EnableAutoConfiguration annotations inwards Spring Boot? (answer)
These were but about of the Core Spring framework as well as MVC Interview questions from my collection, I conduct hold given brusque answers for most of these Spring interview question. I advise to enquiry to a greater extent than or read along those Spring enquiry to ready for follow-up Spring interview questions. Some Spring MVC questions are tricky similar Struts as well as Spring integration as well as tin move solely answered past times experienced Java programme alongside two to 4-year sense inwards Spring MVC framework.
Further Reading
20+ Advanced Spring MVC Interview Questions20 Spring REST Interview Questions for Java developers 10 Java Coding Interview Questions as well as Answer 5 Books to larn Spring Framework better How to implement Role-based access command inwards Spring? Difference betwixt Dependency Injection as well as Factory Pattern 10 Things Java Developers Should Learn 5 Java as well as Web Development Frameworks You tin learn
P.S. - If y'all desire to larn Spring v as well as Spring Boot two from scratch, inwards a guided, code-focused way the I too advise y'all cheque out Eugen Paraschiv's Learn Spring: The Master Class. He has lately launched this course of written report afterwards 2.5 years, which is total of exercises as well as examples to farther cement the existent basis concepts y'all volition larn from the course.
30) How to swallow RESTful Web Service using Spring MVC? (answer)
31) Difference betwixt @SpringBootApplication as well as @EnableAutoConfiguration annotations inwards Spring Boot? (answer)
These were but about of the Core Spring framework as well as MVC Interview questions from my collection, I conduct hold given brusque answers for most of these Spring interview question. I advise to enquiry to a greater extent than or read along those Spring enquiry to ready for follow-up Spring interview questions. Some Spring MVC questions are tricky similar Struts as well as Spring integration as well as tin move solely answered past times experienced Java programme alongside two to 4-year sense inwards Spring MVC framework.
Further Reading
20+ Advanced Spring MVC Interview Questions
P.S. - If y'all desire to larn Spring v as well as Spring Boot two from scratch, inwards a guided, code-focused way the I too advise y'all cheque out Eugen Paraschiv's Learn Spring: The Master Class. He has lately launched this course of written report afterwards 2.5 years, which is total of exercises as well as examples to farther cement the existent basis concepts y'all volition larn from the course.
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