Class TypedBag
- java.lang.Object
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- org.apache.commons.collections.bag.TypedBag
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public class TypedBag extends java.lang.Object
Decorates anotherBag
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.- Since:
- Commons Collections 3.0
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static Bag
decorate(Bag bag, java.lang.Class type)
Factory method to create a typed bag.
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Method Detail
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decorate
public static Bag decorate(Bag bag, java.lang.Class type)
Factory method to create a typed bag.If there are any elements already in the bag being decorated, they are validated.
- Parameters:
bag
- the bag to decorate, must not be nulltype
- the type to allow into the bag, must not be null- Returns:
- a new typed Bag
- Throws:
java.lang.IllegalArgumentException
- if bag or type is nulljava.lang.IllegalArgumentException
- if the bag contains invalid elements
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