Spring @Lookup Method Injection
Spring lookup method injection is the container’s ability to override methods on container-managed beans and return another container-managed bean.
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Tutorials
Spring: Injecting Prototype Bean into Singleton Bean
Spring context supports singleton and prototype bean scopes along with four other scopes specific to the web context. The singleton is the default bean scope. A common problem arises when we want to inject a prototype-scoped bean into a singleton-scoped bean. In this case, as the singleton bean is initialized …
Spring Annotations List
Learn about the most widely used spring annotations. In this tutorial, we will briefly cover the important annotations which are provided by spring core to define beans and create complex application context configurations. 1. Annotations in Spring Framework Similar to other places, annotations help by providing metadata and instructions to …
Spring Interview Questions with Answers
This page lists the most asked and important Spring framework interview questions that we may face in our next job interview. 1. What is Spring Framework? What are it’s Main Modules? Spring is probably the most used Java framework for developing simple web applications to enterprise-class cloud applications and microservices. …
Spring Application Events and @EventListener Example
Learn to create and receive publisher-subscriber-style native events in a Spring application using @EventListener and @RecordApplicationEvents annotations.
Spring ResourceBundleMessageSource Example
Learn to implement i18n in Spring applications using the ResourceBundleMessageSource and how the resource bundles are resolved using locales.
Spring BeanPostProcessor Example
Spring BeanPostProcessor allows for custom modification of new bean instances created by spring bean factory. Spring AOP classes use bean post-processors
Spring: Reading an Internal or External Resource
Learn different ways to load resources or files (e.g. text files, XML files, properties files, or image files) into the Spring application context. Spring ResourceLoader provides a unified getResource() method to retrieve an external resource by the resource path. 1. Spring Resource Interface The Spring Resource is a general interface …
Spring static factory-method example
In Spring framework, if you want to create a bean by invoking a static factory-method, whose purpose is to encapsulate the object-creation process in a static method then you could use factory-method attribute. Read More : Spring FactoryBean Static factory method example If you want to create different EmployeeDTO objects …
Spring FactoryBean with Example
In Spring, FactoryBean creates beans that cannot be created using the ‘new’ keyword and involve complex initialization or configuration.
Spring Stereotype Annotations with Examples
Learn about spring bean stereotype annotations i.e. @Controller, @Component, @Repository and @Service, their real-life usages and examples.
[Solved] java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener
Learn to fix the ContextLoaderListener class not found error that is present used in a web application and is part of the spring-web module.
Spring version-less schema for latest version
If you have worked on Spring framework projects, then you must have seen spring context configuration files (e.g. applicationContext.xml) where in header you specify the schema references (.xsd) for various spring modules. In schema references, we mention the xml namespace and as well as schema version number. Well specifying schema …
Sending Emails using Spring JavaMailSender
Spring send email program for explaing the usage of javamailsender interface of javax.mail dependency. Send email example in Java using Spring framework.
Spring @Autowired – Spring Bean Autowiring Modes
The spring bean autowiring functionality has four modes. These are ‘no‘, ‘byName‘, ‘byType‘ and ‘constructor‘. Autowiring can be in classes with @Autowired.
Spring Bean Autowire by Constructor
Spring bean autowiring “byConstructor” is the recommended approach and injects dependencies into a bean by utilizing its constructor.
Spring Bean Autowire ‘byName’ Example
In Spring Framework, autowiring by name is a feature that allows developers to inject dependencies into a bean by matching the property name with the name of the target bean. This is achieved using the @Autowired annotation (Java Configuration) along with the byName attribute (XML Configuration). 1. What is Autowiring …
Spring Bean Autowire ‘byType’ Example
Bean autowiring by Type instructs the Spring IoC container to inject a bean of the same type as the property into which it is being injected.
Spring Bean Lifecycle: Best Practices and Pitfalls
Explore the Spring bean lifecycle, post-initialization and pre-destruction callbacks, the best practices and potential pitfalls with examples.
Spring Bean Scopes
The beans in Spring or Spring Boot can be created in six different scopes: singleton, prototype, request, session, application and websocket.
Spring 3: Timer Tasks
Timer is a utility class which is used to schedule tasks for both one time and repeated execution in spring applications. Timer is dependent on system clock
Spring IoC Container: BeanFactory and ApplicationContext
Learn about Spring IoC container, how it has been implemented using ApplicationContext, creating it programmatically and accessing the beans.
IoC and Dependency Injection: Key Differences in Spring
Dependency injection is a specific implementation of IoC where dependencies are injected into the component by the IoC container (Spring in this case).
Spring @ControllerAdvice and @ExceptionHandler Example
Spring @ExceptionHandler annotated methods handle specific exceptions, whereas @ControllerAdvice annotated class acts as a global exception handler.
Spring MVC Interceptor Example – XML and Annotation Java Config
In this Spring tutorial, we will learn to use spring mvc interceptor in spring mvc applications. This tutorial is very short to focus only on spring interceptor configuration and usage. Interceptors, as we know, are special web programming constructs which gets invoked every time when a certain pre-configured web request …
Spring @Configuration annotation example
Spring @Configuration annotation example. @Configuration annotation helps in Spring annotation based configuration. It is also called Spring Java Config.