Base system (Ubuntu 16.04, Tomcat7, Java JDK 8)

add-apt-repository ppa:webupd8team/java
apt-get update
apt-get install oracle-java8-installer
apt-get install oracle-java8-set-default
\\
# java -version
java version "1.8.0_101"
Java(TM) SE Runtime Environment (build 1.8.0_101-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.101-b13, mixed mode)

apt-get install mysql-server libmysql-java

mysql --version
mysql  Ver 14.14 Distrib 5.7.15, for Linux (x86_64) using  EditLine wrapper

apt-get install tomcat7 tomcat7-admin (exit with error)

nano -w /etc/default/tomcat7
     JAVA_HOME=/usr/lib/jvm/java-8-oracle
     ###JAVA_OPTS="-Djava.awt.headless=true -Xmx128m -XX:+UseConcMarkSweepGC"
     JAVA_OPTS="-Djava.awt.headless=true -Xmx1g -Xms128m"
     JAVA_OPTS="${JAVA_OPTS} -XX:+UseConcMarkSweepGC -XX:MaxPermSize=256m"

nano -w /etc/tomcat7/tomcat-users.xml

	<tomcat-users>         
	 <user username="*****" password="******" roles="admin-gui,manager-gui"/> 
	</tomcat-users>

apt-get install tomcat7 tomcat7-admin

systemctl status tomcat7.service
● tomcat7.service - LSB: Start Tomcat.
   Loaded: loaded (/etc/init.d/tomcat7; bad; vendor preset: enabled)
   Active: active (running) since Wed 2016-10-05 14:05:15 CEST; 18s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 6279 ExecStart=/etc/init.d/tomcat7 start (code=exited, status=0/SUCCESS)
    Tasks: 21
   Memory: 136.2M
      CPU: 15.807s
   CGroup: /system.slice/tomcat7.service
           └─6305 /usr/lib/jvm/java-8-oracle/bin/java -Djava.util.logging.config.file=/var/lib/tomcat7/conf/loggi

Oct 05 14:05:10 v2p2repos systemd[1]: Starting LSB: Start Tomcat....
Oct 05 14:05:10 v2p2repos tomcat7[6279]:  * Starting Tomcat servlet engine tomcat7
Oct 05 14:05:15 v2p2repos tomcat7[6279]:    ...done.
Oct 05 14:05:15 v2p2repos systemd[1]: Started LSB: Start Tomcat..