There is an interesting JDev OTN forum post at the moment. Jan Vervecken posed the question about why is JDeveloper "The forgotten Java IDE?" This question straddles all sorts of issues including the Java IDE wars, anti-Java-bias by non Java (read: Oracle) programmers, anti-Oracle/proprietary bias by Java programmers and so on.
There has been a substantial amount of views and responses including some from the Oracle JDeveloper team heavy weights and Oracle Regional Directors.
Worth a read & maybe your $0.02 worth too.
Thanks to Jan for discussing the issue.