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Decorator pattern: Improve the example

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Ilkka Seppälä
2016-11-22 23:08:39 +02:00
parent 68ec24c62e
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decorator/README.md
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@ -24,9 +24,9 @@ functionality.
## Applicability
Use Decorator
* to add responsibilities to individual objects dynamically and transparently, that is, without affecting other objects
* for responsibilities that can be withdrawn
* when extension by subclassing is impractical. Sometimes a large number of independent extensions are possible and would produce an explosion of subclasses to support every combination. Or a class definition may be hidden or otherwise unavailable for subclassing
* To add responsibilities to individual objects dynamically and transparently, that is, without affecting other objects
* For responsibilities that can be withdrawn
* When extension by subclassing is impractical. Sometimes a large number of independent extensions are possible and would produce an explosion of subclasses to support every combination. Or a class definition may be hidden or otherwise unavailable for subclassing
## Real world examples
* [java.io.InputStream](http://docs.oracle.com/javase/8/docs/api/java/io/InputStream.html), [java.io.OutputStream](http://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html),