Raspberry Pi 3 - Starting a Java JAR on Boot using systemd

gistfile1.txt

Jessie has moved away from sysvinit and onto systemd. Writing an init script to /etc/init.d/ is outdated,
and a bit tedious since you have to handle the start/stop/restart logic yourself (if you want those capabilities).

New Method:

1. Write a unit file for systemd.
$ sudo nano /etc/systemd/system/your_jar_software.service

  [Unit]
  Description=Example on starting a JAR with systemd
  After=network.target

  [Service]
  Type=simple
  ExecStart=/usr/bin/java -jar /home/pi/path/to/your/JAR.jar

  [Install]
  WantedBy=multi-user.target

2. Start it at boot
$ sudo systemctl enable your_jar_software

3. Manually control it
$ sudo systemctl start|stop|status|restart your_jar_software

4. Observe the output
$ sudo journalctl -u your_jar_software