Spoken like someone who knows nothing about Java. There are a bunch of apps written in Java web start(ie yEd), which involves just clicking on a link. Off the top of my head, some very popular Java apps are Eclipse/Intellij or Azureus.
I use IntelliJ daily, and the install experience is "devloper friendly", not exactly end user friendly. Dont get me started on Eclipse install process.
JWS is awful. It is totally not the way users expect to install applications.
Probably the part where it usually can't find your JDK (and barfs with some random error on startup as a result) until you edit a config file or set some environment variable(s). NetBeans on the other hand usually finds 5 different JDKs on your system and asks which one you would like to use.
