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Alt key stops working on Java 9

Torsten and me are facing the problem that after a certain time the Alt key stops working: navigating becomes a problem. Quitting and restarting CafeTran solves the problem.


We're both on Java 9 now and since then the problem started.



Maybe, there is a pattern for this Java issue on your side? I have checked it several times and it still works.

Maybe it has something to do with this here

https://coderanch.com/t/627387/java/ALT-Key-working-Java-internal (last posting, "InternalFrame close method was calling setClosed(true)".


Keys do not suddenly stop working, there must a reason

I do not find anything on "Alt-Key stops working" in correlation with "Java 9", when asking Google. Java problem? Swing problem with Java 9? Probably, but only with some specific problem.

  • Buffer overflow (not enough RAM, memory inconsistencies happening after a time "x")? In my case, perhaps, but not for Hans, who is a RAM hamster. Well, maybe Java 9 has a different memory allocation/administration.
  • A small glitch in some of the newer features?
  • Any command that does not work good with Java 9? 

Note to myself and to Hans: Maybe minimizing and maximzing the CT windows helps (I read this somewhere this morning when searching for probable Java issues). But it did not happen yet today (but yesterday about 4 times).



>Navigating between words on Mac OSX (ALT+LEFT and ALT+RIGHT) are system shortcuts and they work in Java too.


Yes. I know. But they stop working in CafeTran, while they keep working in other apps (native ones).

Navigating between words on Mac OSX (ALT+LEFT and ALT+RIGHT) are system shortcuts and they work in Java too. Note that navigation between segments has other default shortcuts (CTRL+ALT+LEFT and CTRL+ALT+RIGHT) on Mac not to interfere with the system shortcuts.

Yes, it needs longer working to make it happen. And: if it would be a KM problem (of course I've thought of that), wouldn't the fact that after quitting CafeTran the problem is solved, indicate that it's not KM related?


It interferes with navigation via ALT+LEFT and ALT+RIGHT. (The latter is BTW never correct.)

I cannot confirm it yet. It may be a Java 9 issue or some external macro/script interference. Note what triggers it. Perhaps changing the shortcut would help.

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