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How to Set Up JDK and Tomcat on Ubuntu

DZone 's Guide to

How to Set Up JDK and Tomcat on Ubuntu

This quick tutorial will guide you in setting up the latest JDK and Tomcat on Ubuntu, complete with the necessary code and commands.

· Integration Zone ·
Free Resource

Step 1: Download the latest JDK and Tomcat (in this article, I am using JDK 9 and Tomcat 9).

Step 2: Change the permissions and ownership of the "opt" directory.

user@group:~$ chown username:groupname /opt -R
user@group:~$ chmod 755 /opt -R

Step 3: Now unzip the JDK and Tomcat zip files and copy them to the "opt" directory.

 user@group:~$ cp Downloads/jdk-9.0.1 -Rf /opt/
 user@group:~$ cp Downloads/apache-tomcat-9.0.1 -Rf /opt/tomcat-9

Step 4: Now we need to add some lines to the bottom of the "bashrc" file. To open the "bashrc" file:

 user@group:~$ vim .bashrc

Then press "i" to enable insert mode.

Now add these lines to end of "bashrc":

export CATALINA_HOME=/path/of/tomcat
export CATALINA_OPTS="-Xms256m -Xmx512m -XX:MaxPermSize=128m" 
export MAVEN_OPTS="-Xms256m -Xmx512m" 
export JAVA_HOME=/path/of/jdk 
export JDK_HOME=/path/of/jdk
export IDEA_JDK=/path/of/jdk
export M2_HOME=/path/of/maven 
export PATH=${JAVA_HOME}/bin:${M2_HOME}/bin:${PATH}

After adding the lines, press "Esc" to enable read-only mode. After that, press "Shift + ;" and type "wq" to save the "bashrc" file.

Then, run the following command to set the source of the "bashrc" file:

 user@group:~$ source .bashrc

To check the Java version:

 user@group:~$ java ­-version 

It will show results like so:

Java version "9.0.1" 
Java(TM) SE Runtime Environment (build 9.0.1+11) 
Java HotSpot(TM) 64­Bit Server VM (build 9.0.1+11, mixed mode)

Now start the Tomcat server by running the following command:

 user@group:~$ /path/to/tomcat/bin/startup.sh 

Note: “user@group:~$” is your system default. Don't need to copy it.

Topics:
tomcat ,ubuntu ,tutorial ,integration ,jdk

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