/usr/share/applications/jabref.desktop is in jabref 3.8.2+ds-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 | [Desktop Entry]
Name=JabRef
Comment=Graphical editor for BibTex bibliographies
Comment[de]=Grafischer Editor für BibTex-Bibliographien
Exec=jabref %f
Icon=JabRef-icon-48
Terminal=false
Type=Application
Categories=Office;Database;
MimeType=text/x-bibtex;
Keywords=BibTex;
StartupWMClass=net-sf-jabref-JabRefMain
|