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What are different ways to configure a class as Spring Bean?

There are three different ways to configure Spring Bean.
1 XML Configuration: This is the most popular configuration and we can use bean element in context file to configure a Spring Bean.
For example:
<bean name="myBean" class="com.test.spring.beans.MyBean"></bean>

2 Java Based Configuration: If you are using only annotations, you can configure a Spring bean using @Bean annotation. This annotation is used with @Configuration classes to configure a spring bean. Sample configuration is:
public class MyConfiguration {
public MyService getService(){
return new MyService();
3 Annotation Based Configuration: We can also use @Component, @Service, @Repository and @Controller annotations with classes to configure them to be as spring bean. For these, we would need to provide base package location to scan for these classes.
For example:
<context:component-scan base-package="com.test.spring" />

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