Lesson: Properties

In the following sections you will learn how to implement bean properties. A bean property is a named attribute of a bean that can affect its behavior or appearance. Examples of bean properties include color, label, font, font size, and display size.

The JavaBeans™ specification defines the following types of bean properties:

• Simple – A bean property with a single value whose changes are independent of changes in any other property.

• Indexed – A bean property that supports a range of values instead of a single value.

• Bound – A bean property for which a change to the property results in a notification being sent to some other bean.

• Constrained – A bean property for which a change to the property results in validation by another bean. The other bean may reject the change if it is not appropriate.

Bean properties can also be classified as follows:

• Writable – A bean property that can be changed
  • Standard
  • Expert
  • Preferred
• Read Only – A bean property that cannot be changed.
• Hidden – A bean property that can be changed. However, these properties are not disclosed with the BeanInfo class