This week's book giveaways are in the iOS and Features new in Java 8 forums. We're giving away four copies each of Barcodes with iOS: Bringing together the digital and physical worlds and Core Java for the Impatient and have the authors on-line! See this thread and this one for details.
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.