sS addJavaxProtocolToMimeAppsList() {
  File desktopFile = userDir(".local/share/applications/javax-protocol.desktop");
  saveTextFile(desktopFile, [[
[Desktop Entry]
Name=javax URL Handler
GenericName=javax URL Handler
Comment=Handle URL Scheme javax://
Exec=$HOME/bin/jforfirefox %u
Terminal=false
Type=Application
MimeType=x-scheme-handler/javax;
Icon=
Categories=Development;Utility;
]].replace("$HOME", f2s(userDir())));

  ret addAssociationToMimeAppsList("x-scheme-handler/javax", f2s(desktopFile));
}