I have the following jars under /Users/joe/.scala/lib:
commons-codec-1.4.jar
httpclient-4.1.1.jar
httpcore-4.1.jar
commons-logging-1.1.1.jar
ht
I think with 4.1.1 the class is org.apache.http.client.HttpClient instead of org.apache.commons.httpclient, and it's an interface. So you might want
new org.apache.http.client.DefaultHttpClient()
instead of
new org.apache.commons.httpclient.HttpClient()
It might well have been different in an earlier version.