As the error indicates, a port can only be used by a single application at once. In order to resolve the problem, you’ll need to change the port number for one or the other. To change the port that Tomcat is listening on, edit your server.xml and find the “Connector” section. On Ubuntu, the configuration file can be found at /etc/tomcat7/server.xml (edit the version number as needed). It should look like:

    <Connector port="8080" protocol="HTTP/1.1" 
           connectionTimeout="20000" 
           redirectPort="8443" />

Change 8080 to a different number and restart Tomcat for the changes to take effect.

Though, it is unusual that MySql is listening on port 8080. By default, it listens on port 3306. If you’d like to adjust the port that it is running on, edit the file /etc/mysql/my.conf and change the port number in this section:

#
# * Basic Settings
#
user            = mysql
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
port            = 3306
basedir         = /usr
datadir         = /var/lib/mysql
tmpdir          = /tmp
lc-messages-dir = /usr/share/mysql
skip-external-locking

Again, remember to restart MySql for the changes to take effect.

For more information on getting Tomcat up and running on Ubuntu check out:

• How To Install Apache Tomcat on Ubuntu 14.04 via Apt-Get

• How To Optimize Your Tomcat Installation on Ubuntu 14.04