What does bean mean in java

Beans in Java are classes that follow specific conventions, including being stateless, serializable, and adhering to the JavaBean specification. They are used for data transfer, persistence, business logic, and view models, and provide the benefits of code reusability, ease of maintenance, and cross-platform compatibility.

bean meaning in Java

bean is a term in Java that describes a Conventional Java class.

Characteristics of bean

• Stateless: The bean does not save session state, and a new bean instance is created for each request.
• Serializable: Beans can be serialized and transmitted over the network or stored in a file.

• Comply with the JavaBean specification: beans must comply with specific conventions, including:

  • With no-argument constructor
  • For each Each property provides getter and setter methods
  • Use JavaBeans naming convention (property names with first letter capitalized)

Purpose of bean

Bean is mainly used for the following purposes:

• Data Transfer Object (DTO): Bean is used as a container for transferring data between different application components.
• Persistence objects: Beans can be mapped to tables in the database for persistence and retrieval of data.
• Business logic: Beans can encapsulate business logic and implement specific functions of the application.
• View Model: A bean can provide model data for rendering views in an MVC (Model-View-Controller) architecture.

Advantages of beans

Using beans has the following advantages:

• Code reusability: Beans can be reused by multiple application components, improving code reusability.
• Easy to maintain: The state independence of beans makes it easy to maintain and update.
• Cross-platform compatibility: Because the bean implements the JavaBeans specification, it can be used in different Java runtime environments.

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