Tomcat 8.0.21 running in ubuntu 14.04 TLS

I am explaining every step to run tomcat in ubuntu 8.0.21 and how to setup your projects and running Servlets ,Jsp.

1. Install JDK 7 before installing tomcat.

sudo apt-get install openjdk-7-jdk

2. Download the latest version of tomcat tomcat.apache.org , i downloaded Apache Tomcat 8.0.21

I rename dowonload folder to "apache-tomcat"
and move it to location /usr/local/apache-tomcat
go to /usr/local/apache-tomcat/conf/tomcat-users.xml
or you can edit from terminal sudo nano /usr/local/apache-tomcat/conf/tomcat-users.xml
place below lines & save. [ctrl+^+x then press Y]
<role rolename="manager-gui">
<role rolename="admin-gui">
<user password="rohit" roles="manager-gui,admin-gui" username="rohit">
</user>
</role>
</role>

3. We have to create a bash file for running and stoping tomcat. Create a new file tomcat8021 in /etc/init.d/ and add the below code

 #!/bin/bash
export CATALINA_HOME=/usr/local/apache-tomcat
PATH=/sbin:/bin:/usr/sbin:/usr/bin
start() {
sh $CATALINA_HOME/bin/startup.sh
}
stop() {
sh $CATALINA_HOME/bin/shutdown.sh
}
case $1 in
start|stop) $1;;
restart) stop; start;;
*) echo "Run as $0 "; exit 1;;
esac

4. Give 755 permission

    sudo chmod 755 /etc/init.d/tomcat8021

5. For starting stoping tomcat

   sudo /etc/init.d/tomcat8021 start / stop

6. We need to set Classpath and java home varibale to work properly. so i edited the file call environment place below lines there.

sudo nano /etc/environment
CLASSPATH=.:/usr/lib/jvm/default-java/bin:/usr/local/apache-tomcat/lib/servlet-api.jar
JAVA_HOME=/usr/lib/jvm/default-java

Creating a new project in ubuntu 14.04 TLS

1. I created a folder called store in /usr/local/apache-tomcat/

2. store(Project Folder) ---> WEB-INF ---> classes(DIR) , lib(DIR) , web.xml (file)

3. web.xml file looks like below

<web-app>
<servlet>
<servlet-name>HelloWorld</servlet-name>
<servlet-class>HelloWorld</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloWorld</servlet-name>
<url-pattern>/HelloWorld</url-pattern>
</servlet-mapping>
</web-app>

4. Inside classes folder your source file HelloWorld.java will be store for compiling it use below command

mangel@mangel-desktop:/usr/local/apache-tomcat/webapps/store/WEB-INF/classes$ 
javac -classpath /usr/local/apache-tomcat/lib/servlet-api.jar HelloWorld.java

5. After compile .class file created by above command , then you need to create a context file ,

Go to cd /usr/local/apache-tomcat/conf/Catalina/localhost/ from terminal.
sudo nano store.xml (store is the name of your project folder).
Just paste below line
<!-- Store Context -->
<context debug="0" docbase="store" path="/store" reloadable="true">
</context>

So above all configure manually. just open locahost:8080/store/HelloWord.