What is a Java Bean?-

A JavaBean is a reusable software component or module for Java that follows certain conventions for its design and functionality. These conventions are outlined by the JavaBeans API, which defines a set of rules and guidelines for creating Java components that are easy to use and integrate into visual development environments.

Key characteristics of a JavaBean include:

1. Serializable: JavaBeans should implement the Serializable interface to support the ability to save and restore their state.
2. Properties: JavaBeans expose their properties using getter and setter methods, following a naming convention. For example, a property named name would have getName() and setName() methods.
3. Events: JavaBeans can generate events and allow other objects to register as listeners to be notified when certain events occur.
4. Default Constructor: JavaBeans should have a default, no-argument constructor, which allows them to be easily instantiated.
5. Introspection: JavaBeans can be analyzed at runtime through introspection to discover their properties, methods, and events.
6. Customization: JavaBeans can be customized visually in development environments that support JavaBeans, such as IDEs (Integrated Development Environments).

An example of a simple JavaBean might be a class representing a person with properties like name, age, and methods for accessing and modifying these properties.

In summary, a JavaBean is a reusable software component in Java that adheres to specific conventions, making it easy to use and integrate into various development environments.