JiK I just 'checked' - it tells me that Ubuntu has version 20 (which came thru the offical Ubuntu update channel) and the latest is version 24 - but I prefer to get Ubuntu updates thru the Linux update mechanism which includes a direct link to an official 'Java for Linux' site. I got a Java update from them only a while ago.

While it may sound great to get one direct from the Java people, unless it has been tested by the Linux people, I'm leery of just bunging any old crap into the system.

I had to 'insert' Opera a while ago for use by a young person who needed it to run a certain American maths package which would just not work on Firefox at all, but was 'certified' by them to run on Opera or IE. Now Opera refuses to play properly by Linux rules, not having properly updated 'authorization codes' etc, which means that any time there is an Opera update, it goes bananas, and you have to jump thru hoops to fake the codes and get the latest update to install properly.   :-)