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If you mean the org.apache.commons.collections.map.MultiValueMap then you can get all the keys via the multiMap.keySet().iterator() method, or get all the entries (one for each key, having a collection as the value) using the multiMap.entrySet().iterator().
I assume any other MultiValueMap would also be an implementation of java.util.Map and so would also have these same methods.
Joined: Aug 08, 2008
Thank you for your fast reply, that's what I was looking for.