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Defines a map that holds a collection of values against each key.
A MultiMap
is a Map with slightly different semantics.
Putting a value into the map will add the value to a Collection at that
key. Getting a value will always return a Collection, holding all the
values put to that key. This implementation uses an ArrayList as the
collection.
For example:
MultiMap mhm = new MultiHashMap(); mhm.put(key, "A"); mhm.put(key, "B"); mhm.put(key, "C"); Collection coll = (Collection) mhm.get(key);
coll
will be a list containing "A", "B", "C".
Method Summary | |
Object |
remove(Object key,
Object item)
Removes a specific value from map. |
Methods inherited from interface java.util.Map |
clear, containsKey, containsValue, entrySet, equals, get, hashCode, isEmpty, keySet, put, putAll, remove, size, values |
Method Detail |
public Object remove(Object key, Object item)
The item is removed from the collection mapped to the specified key.
key
- the key to remove fromitem
- the item to remove
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