Here is a clear set of instructions I found to install Oracle Java 7. I am going to try them. I'll report back as to whether it works.
And the Java 1.7.0 plugin is installed and working in my web browser.Code:
tim@tim-oneiric:~/Downloads/oracle-jdk-7$ java -version
java version "1.7.0"
Java(TM) SE Runtime Environment (build 1.7.0-b147)
Java HotSpot(TM) 64-Bit Server VM (build 21.0-b17, mixed mode)
tim@tim-oneiric:~/Downloads/oracle-jdk-7$ javac -version
This does not work in Kubuntu as the last step requires gksudo, which of course is not present in Kubuntu (is also not in repositories by default. On top of all this, it installs gtk and some other stuff, when this could probably be done in a console.
Meanwhile I'm still struggling to get it to work in Kubuntu