What is a spring bean and is it different from Java class?

• Spring beans and Java classes are both objects in Java, but they have different characteristics and are used for different purposes.
  
• A Spring bean is an object that is managed by the Spring Framework. This means that the Spring Framework is responsible for creating, configuring, and destroying the bean. Spring beans are typically used to implement business logic and to provide services to other components in an application.
  
• A Java class is a class that is written in the Java programming language. Java classes can be used to create objects, but they are not managed by the Spring Framework. Java classes can be used for any purpose, including implementing business logic, providing services, and creating user interfaces.
  
• The following table summarizes the key differences between Spring beans and Java classes:
  

Feature	Spring Bean	Java Class
Managed by	Spring Framework	No
Lifecycle	Defined by Spring Framework	Defined by developer
Used for	Implementing business logic, providing services, and creating user interfaces	Any purpose

• Spring beans and Java classes can be used together
  
  • Spring beans and Java classes can be used together in a Spring application. Spring beans can be used to implement business logic and to provide services, while Java classes can be used to create user interfaces and to perform other tasks.
    
• When to use a Spring bean
  
  • You should use a Spring bean when you need an object that is managed by the Spring Framework. This is typically the case when you need to implement business logic or to provide services to other components in an application.
    

• When to use a Java class
  
  • You should use a Java class when you need an object that is not managed by the Spring Framework. This is typically the case when you need to create a user interface or to perform other tasks that are not related to the Spring Framework.
    
• Conclusion
  
  • Spring beans and Java classes are both objects in Java, but they have different characteristics and are used for different purposes. Spring beans are managed by the Spring Framework, while Java classes are not. Spring beans are typically used to implement business logic and to provide services to other components in an application, while Java classes can be used for any purpose.
    
• Code samples
  
  • Here is an example of a Spring bean:
    

@Component
public class MyBean {

    private String name;

    public MyBean() {
        this.name = "Spring Bean";
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

}

• Here is an example of a Java class:
  

public class MyClass {

    private String name;

    public MyClass() {
        this.name = "Java Class";
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

}

As you can see, the Spring bean and the Java class are very similar. The main difference is that the Spring bean is managed by the Spring Framework, while the Java class is not. This means that the Spring Framework is responsible for creating, configuring, and destroying the Spring bean, while the Java class is responsible for managing itself.

Thanks !