How do you interview a Spring boot?

Q16. Mention the steps to connect Spring Boot application to a database using JDBC.

1. Step 1: Create a database in MySQL.
2. Step 2: Then you have to create a table inside this database.
3. Step 3: Now, create a Spring Boot project and provide the required details.
4. Step 4: Add the JDBC, MySQL and web dependencies.

What are the Spring boot interview questions?

Spring Boot Interview Questions For Freshers

• What are the advantages of using Spring Boot?
• What are the Spring Boot key components?
• Why Spring Boot over Spring?
• What is the starter dependency of the Spring boot module?
• How does Spring Boot works?
• What does the @SpringBootApplication annotation do internally?

What is Autowiring in Spring interview questions?

The @Autowired annotation provides more accurate control over where and how autowiring should be done. This annotation is used to autowire bean on the setter methods, constructor, a property or methods with arbitrary names or multiple arguments. By default, it is a type driven injection.

What is application context in Spring interview questions?

BeanFactory is the basic container whereas ApplicationContext is the advanced container. ApplicationContext extends the BeanFactory interface. ApplicationContext provides more facilities than BeanFactory such as integration with spring AOP, message resource handling for i18n etc.

What is the difference between RequestMapping and GetMapping?

@RequestMapping is used at the class level while @GetMapping is used to connect the methods. This is also an important Spring MVC interview question to knowing how and when to use both RequestMapping and GetMapping is crucial for Java developers.

What is AOP spring boot?

AOP (Aspect-Oriented Programming) is a programming pattern that increases modularity by allowing the separation of the cross-cutting concern. These cross-cutting concerns are different from the main business logic. We can add additional behavior to existing code without modification of the code itself.

What is the difference between BeanFactory and ApplicationContext?

While the BeanFactory provides basic functionality for managing and manipulating beans, often in a programmatic way, the ApplicationContext provides extra functionality like MessageSource, Access to resources, Event propagation to beans, Loading of multiple (hierarchical) contexts etc.

What is difference between IoC and dependency injection?

Dependency Injection is the method of providing the dependencies and Inversion of Control is the end result of Dependency Injection. IoC is a design principle where the control flow of the program is inverted. Dependency Injection is one of the subtypes of the IOC principle.

What is Spring life cycle?

Spring (Coffee) Bean Lifecycle. The Spring IoC (Inversion of Control) container manages Spring beans. A “Spring bean” is just a Spring-managed instantiation of a Java class. The Spring IoC container is responsible for instantiating, initializing, and wiring beans. The container also manages the life cycle of beans.

What is difference between @RequestParam and @PathVariable?

1) The @RequestParam is used to extract query parameters while @PathVariable is used to extract data right from the URI.

What is AOP framework?

AOP Framework is a software program developed by Acer. The most common release is 3.22. 2001.0, with over 98% of all installations currently using this version. During setup, the program creates a startup registration point in Windows in order to automatically start when any user boots the PC.

Is Spring AOP asynchronous?

So the answer is: Yes, aspect advices like @Before or @After for Spring AOP will be executed asynchronously.

What is the difference between @component and @service?

@Component is a generic stereotype for any Spring-managed component. @Service annotates classes at the service layer. @Repository annotates classes at the persistence layer, which will act as a database repository.

Why default scope is singleton in Spring?

When a bean is a singleton, only one shared instance of the bean will be managed and all requests for beans with an id or ids matching that bean definition will result in that one specific bean instance being returned. Only when you have to keep some session details you should use for example session scope.

What is the difference between ApplicationContext and BeanFactory in Spring framework?

What is @autowired annotation in Spring boot?

The @Autowired annotation provides more fine-grained control over where and how autowiring should be accomplished. The @Autowired annotation can be used to autowire bean on the setter method just like @Required annotation, constructor, a property or methods with arbitrary names and/or multiple arguments.

What is BeanFactory and ApplicationContext?

BeanFactory will create a bean object when the getBean() method is called thus making it Lazy initialization. ApplicationContext loads all the beans and creates objects at the time of startup only thus making it Eager initialization. BeanFactory interface provides basic features only thus requires less memory.

What is AOP Spring?

1. What is Spring AOP? Spring AOP enables Aspect-Oriented Programming in spring applications. In AOP, aspects enable the modularization of concerns such as transaction management, logging or security that cut across multiple types and objects (often termed crosscutting concerns).

What is @repository annotation in Spring?

@Repository Annotation is a specialization of @Component annotation which is used to indicate that the class provides the mechanism for storage, retrieval, update, delete and search operation on objects.

What is AOP job interview?

Find the spring Aop job interview questions and answers on wisdom jobs career edge for your interview success. Aspect Oriented Programming (AOP) is offers modularity.

What is Spring AOP?

Q: What is Spring AOP? What is its use A: Suppose we want to log every method entry and exit. This can be achieved by writing log statements in every method at the start and end. But this will require lot of code work. There are various such tasks like Security which need to be applied across all methods or classes.

What are the different types of advice in Spring AOP?

Define The Types Of Advice In Spring Aop. Before: Advice that runs before a join point. After returning: Advice that runs after a join point normal completion. After throwing: Advice which runs when a methods exits by throwing an exception. After: Advice that runs after the join point exit by any way.

What is Aspect Oriented Programming (AOP)?

Aspect-Oriented Programming (AOP) enables modularization of cross-cutting concerns to solve following problems. 2. What is a pointcut, a join point, an advice, an aspect, weaving, Introduction, Target Object, AOP Proxy?