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Convenience Implementations - Java Tutorial 5.0 英文版
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Trail: Collections
Lesson: Implementations
Convenience Implementations
This section describes several mini-implementations that can be more convenient and more efficient than general-purpose implementations when you don't need their full power. All the implementations in this section are made available via static factory methods rather than public classes.
List View of an Array
The Arrays.asList method returns a List view of its array argument. Changes to the List write through to the array and vice versa. The size of the collection is that of the array and cannot be changed. If the add or the remove method is called on the List, an UnsupportedOperationException will result.
The normal use of this implementation is as a bridge between array-based and collection