How To Install Java And Tomcat On Ubuntu Gnome 16.04

Ubuntu Gnome is an open-source software. It can be used various purposes such as server and desktop version. I have to configure Java (8.0.144) and Tomcat (8.0.46) on your desktop version.  If you can use Apache Tomcat on your Gnome desktop then follow thus step by step my guides.

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At first download Java (8.0.144) and Apache Tomcat (8.0.46)

Configure Java (8.0.144) on your Gnome desktop

Step #01: Create some directory for install Java.

root@tech-ubuntu:~# mkdir -p /home/local/app/java/jdk/

Then upload all java downloaded file on your jdk directory with version name.

Step #02: Select update alternative path for installation Java and Tomcat.

root@tech-ubuntu:~# update-alternatives --install "/usr/bin/javac" "javac" "/home/local/app/java/jdk/8.0.144/bin/javac" 1
root@tech-ubuntu:~# update-alternatives --install "/usr/bin/java" "java" "/home/local/app/java/jdk/8.0.144/bin/java" 1
root@tech-ubuntu:~# update-alternatives --set "javac" "/home/local/app/java/jdk/8.0.144/bin/javac"
root@tech-ubuntu:~# update-alternatives --set "java" "/home/local/app/java/jdk/8.0.144/bin/java"

Step #03: Create Java Home profile. Open profile file with any editor vi /etc/profile and then insert below line.

JRE_HOME=/home/local/app/java/jdk/8.0.144
PATH=$PATH:$JRE_HOME/bin
export JRE_HOME
export PATH

Configure Tomcat (8.0.46) on your Gnome desktop

Step #04: Again create tomcat directory

root@tech-ubuntu:~# mkdir -p /home/local/app/tomcat/

Then upload all downloaded file into tomcat folder with version name.

Step #05: Edit catalina.sh file for setup heap memory on your tomcat bin directory.

root@tech-ubuntu:~# vim /home/local/app/tomcat/8.0.46/bin/catalina.sh

Then insert below line

JAVA_OPTS="-Dfile.encoding=UTF-8 -server -Xms1024m -Xmx2048m -XX:PermSize=64m -XX:MaxPermSize=256m -Djava.awt.headless=true -XX:+UseParallelGC -XX:MaxGCPauseMillis=100"

Sate and exit.

Step #06: Now create Tomcat service file for start and stop. Open vim /etc/init.d/tomcat and insert all below lines on your tomcat file.

#!/bin/bash
### BEGIN INIT INFO
# Provides:tomcat8
# Required-Start:  $network
# Required-Stop:   $network
# Default-Start:   2 3 4 5
# Default-Stop:    0 1 6
# Short-Description: Start/Stop Tomcat server
### END INIT INFO

JAVA_HOME=/home/local/app/java/jdk/8.0.144
export JAVA_HOME
PATH=$JAVA_HOME/bin:$PATH
export PATH
CATALINA_HOME=/home/local/app/tomcat/8.0.46
case $1 in
start)
sh $CATALINA_HOME/bin/startup.sh
;;
stop)
sh $CATALINA_HOME/bin/shutdown.sh
;;
restart)
sh $CATALINA_HOME/bin/shutdown.sh
sh $CATALINA_HOME/bin/startup.sh
;;
esac
exit 0

Step #07: Then create permission for execute Java and start Tomcat.

root@tech-ubuntu:~# chmod 755 /etc/init.d/tomcat

root@tech-ubuntu:~# chmod -R 755 /home/local/app/

root@tech-ubuntu:~# /etc/init.d/tomcat start

Finally goto your browser and type http://localhost:8080/ press enter or http://Your_server_ip:8080/

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