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?

Sources:

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