Technology & Computing

How Many Ways Can You Set Up Spring?

How Many Ways Can You Set Up Spring? One can configure spring into an application using three different ways.

How many ways we can configure Spring? You can configure spring into your application in 3 ways: XML Based Configuration. Annotation-based configuration. Java-based configuration.

How do you set up Spring? Configuration & Bean Annotations

Create a project with a name SpringExample and create a package com. tutorialspoint under the src folder in the created project. Add required Spring libraries using Add External JARs option as explained in the Spring Hello World Example chapter.

How many types of Spring containers are there? There are two types of Containers for Spring.

How Many Ways Can You Set Up Spring? – Related Questions

What is pojo in Spring?

POJO stands for Plain Old Java Object. It is an ordinary Java object, not bound by any special restriction other than those forced by the Java Language Specification and not requiring any classpath. POJOs are used for increasing the readability and re-usability of a program.

What is Spring bean life cycle?

Bean life cycle is managed by the spring container. When we run the program then, first of all, the spring container gets started. After that, the container creates the instance of a bean as per the request, and then dependencies are injected. And finally, the bean is destroyed when the spring container is closed.

What is the difference between configuration and component in Spring?

The main difference between these annotations is that ComponentScan scans for Spring components while EnableAutoConfiguration is used for auto-configuring beans present in the classpath in Spring Boot applications.

What does configuration do in spring?

Spring Configuration annotation helps in Spring annotation based configuration. Configuration annotation indicates that a class declares one or more Bean methods and may be processed by the Spring container to generate bean definitions and service requests for those beans at runtime.

How does Spring Boot read property value?

Another very simple way to read application properties is to use Value annotation. Simply annotation the class field with Value annotation providing the name of the property you want to read from application. properties file and class field variable will be assigned that value.

How does Spring Boot determine property value?

You can use Value(“${property-name}”) from the application. properties if your class is annotated with Configuration or Component . You can make use of static method to get the value of the key passed as the parameter. An application can read 3 types of value from the application.

How many types of IoC are there in Spring?

There are basically two types of IOC Containers in Spring: BeanFactory: BeanFactory is like a factory class that contains a collection of beans. It instantiates the bean whenever asked for by clients. ApplicationContext: The ApplicationContext interface is built on top of the BeanFactory interface.

What is difference between IoC and DI in Spring?

Inversion of control is a design principle which helps to invert the control of object creation. Dependency Injection is a design pattern which implements IOC principle. DI provides objects that an object needs.

What are 2 IoC containers we have in Spring?

Hence, in this Spring Containers tutorial, we learned two types of Spring IoC Containers: BeanFactory Container and ApplicationContext Container in Spring Framework.

What is the benefit of using Spring framework?

Spring is one of the most popular open source framework for developing enterprise applications. It provides comprehensive infrastructure support for developing Java based applications. Spring also enables the developer to create high performing, reusable, easily testable and loose coupling enterprise Java application.

Can POJO have methods?

A POJO has no naming convention for our properties and methods. This class can be used by any Java program as it’s not tied to any framework.

Why do we use spring?

Spring makes programming Java quicker, easier, and safer for everybody. Spring’s focus on speed, simplicity, and productivity has made it the world’s most popular Java framework.

How do you control a bean life cycle in spring?

Spring framework provides following 4 ways for controlling life cycle events of a bean: InitializingBean and DisposableBean callback interfaces. *Aware interfaces for specific behavior. Custom init() and destroy() methods in bean configuration file.

What are advices in spring?

Advice is an action taken by an aspect at a particular join point. Different types of advice include “around,” “before” and “after” advice. The main purpose of aspects is to support cross-cutting concerns, such as logging, profiling, caching, and transaction management.

What is the purpose of autowired in spring?

Enabling Autowired Annotations

The Spring framework enables automatic dependency injection. In other words, by declaring all the bean dependencies in a Spring configuration file, Spring container can autowire relationships between collaborating beans. This is called Spring bean autowiring.

What is the difference between component and bean in Spring?

Component is a class level annotation whereas Bean is a method level annotation and name of the method serves as the bean name. Component need not to be used with the Configuration annotation where as Bean annotation has to be used within the class which is annotated with Configuration.

Why component is used in Spring?

Component is an annotation that allows Spring to automatically detect our custom beans. In other words, without having to write any explicit code, Spring will: Scan our application for classes annotated with Component. Instantiate them and inject any specified dependencies into them.

What is a bean in Spring?

Spring – Bean Definition

A bean is an object that is instantiated, assembled, and otherwise managed by a Spring IoC container. These beans are created with the configuration metadata that you supply to the container.

What is the use of bean annotation in spring?

Spring Bean Annotation is applied on a method to specify that it returns a bean to be managed by Spring context. Spring Bean annotation is usually declared in Configuration classes methods. In this case, bean methods may reference other Bean methods in the same class by calling them directly.

What is the use of repository annotation in spring?

Spring Repository annotation is used to indicate that the class provides the mechanism for storage, retrieval, search, update and delete operation on objects.

What is PropertySource in spring?

Spring PropertySource annotation is used to provide properties file to Spring Environment. This annotation is used with Configuration classes. Spring PropertySource annotation is repeatable, means you can have multiple PropertySource on a Configuration class.

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