It may sound silly, I downloaded Launch4j but I don't know how to install it. Any help please?
Download the latest version from here, currently version 3.8
Open a terminal via Ctrl-Alt-T and go into your Download folder, eg
Extract the archive
sudo tar xf launch4j-3.8-linux.tgz -C /opt
Create desktop file
and add the lines below
[Desktop Entry] Encoding=UTF-8 Version=1.0 Type=Application Name=Launch4j Comment=Launch4j Executable Wrapper Icon=launch4j Exec=/opt/launch4j/launch4j StartupNotify=true StartupWMClass=Launch4j
Start via your Launcher
As you said you have downloaded Launch4j...just once again make sure you downloaded linux file
Just sharing you the link if not downloaded the same...
Step 1 : Go to the Download Folder and extract the launch4j-3.8-linux.tgz
Step 2 : Now open terminal
Step 3 : Go to the directory where you Extracted the file(Using "cd" command)
Step 4 : Once you are in the Directory of extracted file you just need to run the jar file there
run the command : java -jar launch4j.jar