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Added some notes about the abstraction layers. 

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/collections/trunk@130808 13f79535-47bb-0310-9956-ffa450edef68
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pjack 2002-08-22 02:08:32 +00:00
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commit cb3d67cf61
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src/java/org/apache/commons/collections/primitives/package.html
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<BODY>
Contains collection implementations that use primitive elements.
Contains collection implementations that use primitive elements. Currently
the package offers lists of primitive elements that are backed by primitive
arrays, offering substantial memory and performance savings.<p>
There are generally two layers of abstract per primitive list type. The
first layer, implemented by the <Code>Abstract*List</Code> classes, provides
default implementations for all of the <Code>java.util.List</Code> methods
and most of their primitive counterparts. The second layer of abstraction,
implemented by the <Code>Abstract*ArrayList</Code> classes, provides
additional method signatures for manipulating a list that's backed by a
primitive array.<p>
Note that these layers are not provided for <Code>FloatArrayList</Code>,
and that many primitive types are not represented in this package at all;
these inconsistencies may be addressed by a future release.
</BODY>