What is the purpose of a Java Bean?

Java Bean is a Java class that adheres to certain specifications and serves the following purposes:

1. Encapsulating data: Java Bean provides private attributes and public setter and getter methods to encapsulate data, making data access more secure and manageable.
2. Reusability: Java Beans can be shared and reused among multiple modules or components, making the code more modular and easier to maintain.
3. Java Bean can be serialized by implementing the Serializable interface, allowing objects to be transmitted over a network or saved to disk, facilitating data persistence and transfer.
4. Standardization: Java Beans adhere to specific naming and design conventions, making it easier for different developers to understand and collaborate.
5. Tools support: Java Beans can automatically generate code through certain Java development tools, such as IDE’s autocomplete and refactoring features, to enhance development efficiency.

In conclusion, Java Beans are primarily used to encapsulate data and enhance the reusability of components, making Java code more standardized, easy to maintain, and extend.