What
Is a Java Bean?
A Java Bean is a software component that has been designed to be
reusable in a variety of different environments. There is no restriction on the
capability of a Bean. It may perform a simple function, such as obtaining an
inventory value, or a complex function, such as forecasting the performance of
a stock portfolio. A Bean may be visible to an end user. One example of this is
a button on a graphical user interface. A Bean may also be invisible to a user.
Software to decode a stream of multimedia information in real time is an
example of this type of building block. Finally, a Bean may be designed to work
autonomously on a user’s workstation or to work in cooperation with a set of
other distributed components.
Software to generate a pie
chart from a set of data points is an example of a Bean that can execute
locally. However, a Bean that provides real-time price information from a stock
or commodities exchange would need to work in cooperation with other
distributed software to obtain its data.
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