Java Install, lib/ext jars Windows XP uses Wrong JVM annoying problem.
Hi:
I recently installed Java 1.5 on My XP machine.
I was revising an Image Viewer I wrote under Java 1.4 on my Win98 box,
This Program uses JAI Plugins so that in can read in TIF files and etc.
So therefore it requires JAR files installed in
%JAVA_HOME%\jre\lib\ext
The problem I noticed was that none of the 'new' Image Reader plugins worked on the XP box, but did on the Win98 Box with 1.4
This of course caused much 'gnashing of teeth'
Eventually I discovered what was wrong:
The Java 1.5 Install changed:
The File association for Jar Files from: {the equivalent of}
-%JAVA_HOME%\bin\javaw.exe
to:-
C:\Program Files\Java\jre1.5.0_05\bin\javaw.exe
which I altered back and now if run directly from the Jar file (by double clicking), my App gets the 'jars' in the extension path and of course works and reads TIFs and all that...
Of course from the Command Window:-
Java -jar PicView.jar
does not use the JAI extension,
whereas:-
C:\Java\Jdk1.5\bin\Java -Jar PicView.jar
does use the JAI extensions
The only entries in my PATH point to the jvm in C:\Java\jdk1.5
and the Standard ones XP just puts there by default
Can anyone tell me how to fix this annoying problem?
Playing with the JAVA icon in Control Panel doesn't help
Of course I suppose I could have installed 'Everything' in C:\Program Files. But I did not want to.
I.e has anyone else fixed this for themselves? and if so how?
