What methods can be used to configure and set up components in the Spring framework?

In Spring, component setup and configuration can be done in several ways:

1. XML configuration — the traditional method, where components are described in XML files using <bean> tags.

2. Annotations — a more modern and convenient approach. For example, @Component, @Service, @Repository for defining beans, @Autowired for dependency injection.

3. Java configuration — using classes annotated with @Configuration and methods with @Bean that return component objects.

Example of Java configuration:

@Configuration
public class AppConfig {
    @Bean
    public MyService myService() {
        return new MyServiceImpl();
    }
}

These methods can be combined, choosing the style that best fits the project.