Defining beans

Pragya Keshap answered on February 18, 2023 Popularity 1/10 Helpfulness 1/10

answer Defining beans

Defining beans

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Beans are Java objects that are managed by IoC containers. The developer supplies the configuration metadata to the IoC container, which is then used by the container to construct, assemble, and manage the beans. Beans should have a unique identifier inside a container. A bean may have more than one identity using an alias.

You can define beans using XML, Java, and annotations. Let's declare a simple bean using Java-based configuration:

public class SampleBean {
    public void init() { // initialization logic }
    public void destroy() { // destruction logic }
    // bean code
}
public interface BeanInterface { // interface code }
public class BeanInterfaceImpl implements BeanInterface {
    // bean code
}
@Configuration
public class AppConfig {
    @Bean(initMethod = "init", destroyMethod = "destroy", name         = {"sampleBean", "sb"}")
    @Description("Demonstrate a simple bean")
    public SampleBean sampleBean() {
        return new SampleBean();
    }
    @Bean
    public BeanInterface beanInterface() {
        return new BeanInterfaceImpl();
    }
}

Popularity 1/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: java

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Contributed on Feb 18 2023

Pragya Keshap

0 Answers Avg Quality 2/10

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