Have you used Java code to define and configure components in Spring applications?

Yes, in Spring applications, Java code is often used to define and configure components using annotations and configuration classes. Instead of XML configurations, classes with the @Configuration annotation can be created, where methods marked with @Bean return the required components (beans).

Example:

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

You can also use annotations like @Component, @Service, @Repository for automatic scanning and registration of components. This approach simplifies configuration and improves code readability.