40 Latest Interview Questions and Answers on Spring, Spring MVC, and Spring Boot
- What is Tight Coupling?
- What is Loose Coupling?
- What are Beans in Spring?
- Explain Bean creation process?
- What is the importance of the annotation @Primary.
- What is Dependency Injection?
- Explain Inversion of Control (IOC).
In respect to this, what are spring interview questions?
Spring Interview Questions
- 2) What are the advantages of spring framework?
- 3) What are the modules of spring framework?
- 5) What is the role of IOC container in spring?
- 6) What are the types of IOC container in spring?
- 8) What is the difference between constructor injection and setter injection?
Similarly, what is meant by Autowiring? Autowiring in Spring. Autowiring feature of spring framework enables you to inject the object dependency implicitly. It internally uses setter or constructor injection. Autowiring can't be used to inject primitive and string values. It works with reference only.
Similarly one may ask, what are different types of Autowiring in spring?
This means that it is possible to automatically let Spring resolve collaborators (other beans) for your beans by inspecting the contents of the BeanFactory. This is called spring bean autowiring. The autowiring functionality has four modes. These are ' no ', ' byName ', ' byType ' and ' constructor '.
What are the important topics in spring?
- Spring Context: For Dependency Injection (DI)
- Spring DAO: For database operation using DAO pattern.
- Spring JDBC: For JDBC and Datasource support.
- Spring ORM: For ORM tool support such as Hibernate.
- Spring AOP: For Aspect Oriented Programming.
- Spring Web module: For creating web application.
What are spring annotations?
Some of the spring core framework annotations are:- @Configuration : Used to indicate that a class declares one or more @Bean methods.
- @Bean : Indicates that a method produces a bean to be managed by the Spring container.
- @PreDestroy and @PostConstruct are alternative way for bean initMethod and destroyMethod.
Why do we need spring?
To make life easier for Java Web Development. The main reason to use Spring is to embrace and employ the idea of "Inversion of Control and Dependency injection" in an efficient, easy and best possible ways while developing application.What is loosely coupled in spring?
Loose coupling is the approach in which components of an application are interconnected to each other in least dependent way. In Spring Framework loose coupling is achieved by a core feature called Dependency Injection and IoC container. In dependency injection, components define their own dependencies when they need.Why is spring light weight?
Spring, on the other hand, is lightweight because it allows minimally invasive development with POJOs. A lightweight framework makes itself as invisible as possible. As others have already pointed out, Spring is considered lightweight compared to traditional Java EE applications.Why do we use IoC in spring?
Spring IoC is the mechanism to achieve loose-coupling between Objects dependencies. To achieve loose coupling and dynamic binding of the objects at runtime, objects dependencies are injected by other assembler objects.What is Dao in spring?
It's a design pattern in which a data access object (DAO) is an object that provides an abstract interface to some type of database or other persistence mechanisms. Spring data access framework is provided to integrate with different persistence frameworks like JDBC, Hibernate, JPA, iBatis etc.What is IoC and DI in spring?
Inversion of Control (IoC) and Dependency Injection (DI) are used interchangeably. By DI, the responsibility of creating objects is shifted from our application code to the Spring container; this phenomenon is called IoC. Dependency Injection can be done by setter injection or constructor injection.How would you describe yourself?
To help you decide how to describe yourself in an interview, consider these examples:- I am passionate about my work.
- I am ambitious and driven.
- I am highly organised.
- I'm a people person.
- I'm a natural leader.
- I am results oriented.
- I am an excellent communicator.
What is application context in spring?
The Application Context is Spring's advanced container. Similar to BeanFactory, it can load bean definitions, wire beans together, and dispense beans upon request. BeanFactory can still be used for lightweight applications like mobile devices or applet-based applications.Why Singleton beans are not thread safe?
Singleton spring beans has no relation with thread safety. spring container only manages life-cycle of objects and guaranteed that only one object in spring container. so If an Non thread safe object is injected then obviously it is not thread safe. To make it thread safe you have to handle it by coding.What is dispatcher servlet in spring?
The DispatcherServlet is one of the important components of the Spring MVC web framework and acts as a Front Controller. The DispatcherServlet is a front controller like it provides a single entry point for a client request to Spring MVC web application and forwards request to Spring MVC controllers for processing.Why is Spring MVC used?
A Spring MVC is a Java framework which is used to build web applications. It implements all the basic features of a core spring framework like Inversion of Control, Dependency Injection. A Spring MVC provides an elegant solution to use MVC in spring framework by the help of DispatcherServlet.Why should we hire you examples?
Make his job easier by convincing him that:- You can do the work and deliver exceptional results.
- You will fit in beautifully and be a great addition to the team.
- You possess a combination of skills and experience that make you stand out from the crowd.
- Hiring you will make him look smart and make his life easier.
