JavaBeans的属性

There are 4 types of properties in JavaBeans:

1)Simple property

Simple properties are combined with a pair of GetXXX/SetXXX methods. If there exist a isX method,it is indicated that X is a boolean property

2) Indexed property

Indexed property is representative of an array. They also have setXXX/getXXX method to access items in the array or to the array as a whole.

3) Bound property

Bound property means it will notify other objects when it has been changed. whenever modified,it fires a PropertyChange event and passes is to other Beans so that other Beans can do accordingly.

4) Constrained property

modifiation of Constrained Property can be denied by objects combined with it.