Launcher on windows with java 11+ doesn't work

[BishopWolf]

The FIJI launcher for windows doesn't work with java 11. This is related to wrong file separator

PS ~\Fiji.app> .\ImageJ-win64.exe --java-home="C:\\JAVA\\java-11-openjdk" --debug
PS ~\Fiji.app> JRE not found in 'C:\Users\ALEX~1.VER\DOCUME~1\Fiji.app/jre'                   // Note this line with mangled path
JAVA_HOME appears to be a JRE: 'C:\\JAVA\\java-11-openjdk'
Available RAM: 8075MB, using 3/4 of that: 6057MB
Splashscreen library not found: 'C:\\JAVA\\java-11-openjdk/bin/splashscreen.dll'
javaw -Dpython.cachedir.skip=true -Dplugins.dir=C:\\Users\\ALEX~1.VER\\DOCUME~1\\Fiji.app -Xmx6057m -Xincgc -XX:PermSize=128m -Djava.class.path=C:\\Users\\ALEX~1.VER\\DOCUME~1\\Fiji.app/jars/imagej-launcher-6.0.2.jar -Dimagej.dir=C:\\Users\\ALEX~1.VER\\DOCUME~1\\Fiji.app -Dij.dir=C:\\Users\\ALEX~1.VER\\DOCUME~1\\Fiji.app -Dfiji.dir=C:\\Users\\ALEX~1.VER\\DOCUME~1\\Fiji.app -Dfiji.defaultLibPath=bin/server/jvm.dll -Dfiji.executable=C:\\Users\\alex.vergara\\Documents\\Fiji.app\\ImageJ-win64.exe -Dij.executable=C:\\Users\\alex.vergara\\Documents\\Fiji.app\\ImageJ-win64.exe -Djava.library.path=C:\\Users\\ALEX~1.VER\\DOCUME~1\\Fiji.app/lib/win64;C:\\Users\\ALEX~1.VER\\DOCUME~1\\Fiji.app/mm/win64 -Dscijava.context.strict=false -Dij.debug=true -Dscijava.log.level=debug net.imagej.launcher.ClassLauncher -ijjarpath jars -ijjarpath plugins net.imagej.Main
Using JAVA_HOME C:\\JAVA\\java-11-openjdk
Opening Java library C:\\JAVA\\java-11-openjdk/bin/server/jvm.dll
Warning: falling back to System JVM

Please notice the paths are mangled and a lot of hard coded forward slashes mess up with the correct paths. You can use File.separator instead, this will work everywhere.

[mkitti]

Could you specify from where you downloaded Java 11? Oracle? Azul Zulu? Regarding File.separator, part of the issue is that launcher is largely coded in C, not Java.

[ctrueden]

I am working on a new launcher to replace the current ImageJ Launcher. Source code is here. But it's Linux only right now. I will start working on Windows support soon, though.