#Uninstall java for mac os x install#
I can’t expect him to fiddle around trying to install the legacy Java 6 runtime to get my app to work. To re-emphasize, I am concerned with delivering a Mac app that just works after the user has performed an easy Java install. This was what caused me to check things out, confirming that Apple’s legacy Java SE 6 does run under Catalina.Ī solution for the developer - replacing the JavaApplicationStub?
When that was eventually overcome, the app worked. However I found a thread on the MacRumors forum about the different problem of Catalina preventing installation of Java SE 6 Runtime for a commercial app that requires it. This had suggested to me (as also the kind comment by that the Java SE 6 Runtime was 32-bit. These include… the old Apple-maintained Java 6 Runtime… There is an article on Ars Technica that states:Īnd a few longstanding components of macOS haven’t made the jump to 64-bit. General Point: Apple’s legacy Java SE 6 Runtime does run under Catalina When I copied the 1.6.0.jdk directory from another machine into the JavaVirtualMachine directory (just dragged and dropped it all over - needed an admin password) it ran from the packaged app as shown below.My application ran as a ‘naked’ jar file because there was a copy of Java 1.8 from Oracle in that directory which Jar Launcher (the app that handles jar files) must have employed. The reason that my application failed to run was because the Catalina update had removed the Java SE 6 Runtime from the JavaVirtualMachine directory where it resided on a machine running an earlier version of Mac OS X: /Library/Java/JavaVirtualMachines However, as people are encountering various problems with Java apps on the Mac I thought it useful to post to help others and allow suggestions for improvements. This is a provisional answer to my own question, which I will not accept until I have finally tested it.
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