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An interface for Grouping a collection.
The method getGroup() returns an object which acts as the identifier for a group. Builtin types cannot be returned, but can be converted to their object types; e.g. int -> Integer.
| Method Summary | |
java.lang.Object |
getGroup(java.lang.Object obj)
Take an object and return an object that specifies the group it is in. |
| Method Detail |
public java.lang.Object getGroup(java.lang.Object obj)
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