Multiple values for one key in hashtable k, v

So, I know that java.util.hashtable (as of Java 1.5) uses separate chaining to handle collisions. What I want to know is how to get a certain value somewhere in that bucket if they all share a common key? Javadoc says I have to search it sequentially but doesn't say how.

OK, there's a lot of confusion on here for such a short thread :-)
Firstly, HashMaps pick which "bucket" to store your object in based on the hash value of your object (see Object.hashCode()). However, the actual object equality test (applied to the keys during a search) is based on Object.equals(). Therefore which bucket your object is in is irrelevant - the bucketting concept is just used as a way of quickly locating a subset of all the keys in the map which might match your search value. There could very well be just a single bucket in a map and it wouldn't change its logical behaviour.
This statement: "any Map including Hashtable, can only have a single (key,value) pair" is poorly worded. What it should say is that for any given key, a map can only hold a single value.
Really, you don't need to think about the internal structure of maps (i.e. buckets, etc.).
If you want to store multiple values for any given key, then make your value a list (java.util.List) and store your multiple real values inside that list.

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