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See:
          Description
| Interface Summary | |
|---|---|
| Bean | A wrapper around 'bean-like' structures. | 
| Container | A wrapper around 'container-like' structures. | 
| DecoratedBean | |
| DecoratedGrowableContainer | |
| DecoratedIndexedContainer | |
| DecoratedMutableIndexedContainer | |
| GrowableContainer | A wrapper for 'container-like' structures that do not have a fixed size. | 
| IndexedContainer | A wrapper for 'container-like' structures that have a logical ordering which can be used to retrieve elements at a specific index within the structure. | 
| MutableIndexedContainer | A wrapper for an indexed container that allows modification of an element at a given index. | 
| Sizable | A wrapper for objects that can tell how many elements are contained within themselves. | 
| Wrapper | A wrapper around another object that allows the data in the object to be manipulated. | 
| Exception Summary | |
|---|---|
| WrapperException | |
Defines an API for manipulating data in a stateful manner.  Wrappers provide a consistent API for different types.  For example, instead of overloading a method so that it can accept both a Collection and an Object array, a single method signature utilizing the Container interface may be specified.
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