Spring Beans

Today I have landed into the Spring Planet.

Hence learning about century old high-tech that will help on building the back-end of the Command Deck for Microgreens and Hydroponics.

Spring has some cool things. Starting with Beans.

Each "Bean" is kind of a unique seed
that we are able to plant inside the Spring Container
or Context for the Back-end of the application.

Every Bean is an Object with the @Component attribute to it.

Sad story? The Bean has always a predefined future.
Be cleaned up by the Garbage Collector.

How to declare Beans

We can create Beans in our Universe by adding them to our AppConfig:

@Configuration
public class AppConfig {
    @Bean
    public AwesomeBean awesomeBean() {
        return new AwesomeBeanImpl();
    }
}

How to get Beans

Since we are able to get our hands dirty into the soil (Spring Container Context), we can use the getBeans() method for accessing its inner powers:

JavaConfigApplicationContext context = new JavaConfigApplicationContext(...);
AwesomeBean awesomeBean = context.getBean(AwesomeBean.class);

awesomeBean.usePower(); // BAM!

Instead of relying on pre-defined Beans from some frameworks,
being able to create custom Beans is like being able to create new Microgreens seeds based on your own criteria. Isn't that awesome?

End log.

Sources:

• https://docs.spring.io/spring-javaconfig/docs/1.0.0.m3/reference/html/creating-bean-definitions.html