org.apache.commons.collections.collection
Class TypedCollection
java.lang.Object
|
+--org.apache.commons.collections.collection.TypedCollection
public class TypedCollection
extends java.lang.Object
Decorates a
Collection
to validate that elements added are of a specific type.
The validation of additions is performed via an instanceof test against
a specified
Class
. If an object cannot be added to the
collection, an IllegalArgumentException is thrown.
- Commons Collections 3.0
- Stephen Colebourne
- Matthew Hawthorne
static Collection | decorate(Collection coll, Class type) |
TypedCollection
protected TypedCollection()
Restrictive constructor.
decorate
public static Collection decorate(Collection coll, Class type)
Factory method to create a typed collection.
If there are any elements already in the collection being decorated, they
are validated.
- coll - the collection to decorate, must not be null
- type - the type to allow into the collection, must not be null
- if collection or type is null
- if the collection contains invalid elements
Collection
to validate that elements added are of a specific type. The validation of additions is performed via an instanceof test against a specifiedClass
. If an object cannot be added to the collection, an IllegalArgumentException is thrown.