The ICEfaces-1.6.0-DR5-libs-JDeveloper.zip only contains the ICEfaces runtime libraries for use with the JDeveloper integration. You also need to download and install the "ICEfaces-JDeveloper-IDE-2.0.0.zip" file, which contains the actual JDeveloper ICEfaces Integration. It is located under the "IDE Tool Integration Bundles" heading for ICEfaces 1.6 DR#5 (on the ICEfaces.org download page).
We organized it this way so that in the future when updated ICEfaces versions are released you only need to download and install the new runtime libs for JDeveloper, not the entire integration.
Regards,
Ken
Ken Fyten
VP Product Development
ICEsoft Technologies, Inc.