This is 15 of 16 parts of tutorial series
Tutorial Content: Spring tutorial for beginners
- Introduction to spring framework
- Spring interview questions
- Dependency injection(ioc) in spring
- Spring XML based configuration example
- Spring java based configuaration
- Dependency injection via setter method in spring
- Dependency injection via constructor in spring
- Spring Bean scopes with examples
- Initializing collections in spring
- Beans Autowiring in spring
- Inheritance in Spring
- Spring ApplicationContext
- Spring lifetime callbacks
- BeanPostProcessors in Spring
- Annotation based Configuration in spring
- Spring AOP tutorial
There are two ways via which you can inject dependency in spring
- By configuring XML.
- By using annotation.
In all our previous posts,we have injected dependency by configuring XML file but instead of doing this,we can move the bean configuration into the component class itself by using annotations on the relevant class, method, or field declaration.
You might think what if you have done both i.e.used annotations and XML both.In that case,XML configuration will override annotations because XML configuration will be injected after annotations.
Now annotations based configuration is turned off by default so you have to turn it on by entering into spring XML file.
<?xml version="1.0" encoding="UTF-8"?>
<!-- beans declaration goes here -->
Now you are ready to use annotations in your code.Let us discuss few important annotations in spring