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interfaces/implementations general |
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Lesson: Implementations
Implementations are the actual data objects used to store collections, which
implement the core collection interfaces described in
interfaces/indexthe previous lesson
The sections that follow describe three kinds of implementations:
generalGeneral-purpose Implementations
General-purpose implementations are the public classes that provide the
primary implementations of the core collection interfaces.
wrapperWrapper Implementations
Wrapper implementations are used in combination with other
implementations (often the general-purpose implementations) to provide added
functionality.
convenienceConvenience Implementations
Convenience implementations are mini-implementations, typically made
available via static factory methods that provide convenient,
efficient alternatives to the general-purpose implementations for special
collections (like singleton sets).
Additionally, you can build your own implementations, based on the JDK's
abstract implementations. This is described in custom-implementations/indexa separate lesson because
it's an advanced topic. It's not particularly hard, but relatively few people
will need to do it.
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interfaces/implementations general |
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