Getting "Launching Tomcat v8.0 at local host " has encountered and problem error in eclipse.

[krishna kumar.s]

I am new to JEE , I am using Eclipse . I have created a servlet while compiling the servlet I got an error saying "Launching Tomcat v8.0 at local host Port 8080 required by Tomcat v8.0 Server at localhost is already in use. The server may already be running in another process, or a system process may be using the port. To start this server you will need to stop the other process or change the port number(s).

I am able to start tomcat by using "startup.bat" if I visit http://localhost:8080/ the page says server is up and running .Please help me to resolve the issue.

[Tim Holloway]

If you are using Eclipse but you started Tomcat manually (via startup.bat), then probably you asked Tomcat to start a Tomcat debug session which made it attempt to launch its own copy of Tomcat.

Since only one process can own port 8080 at a time, the ownership of port 8080 by the manually-launched Tomcat would cause the Eclipse-launched Tomcat to fail to start its http listener service.

You would need to stop the external manually-launched Tomcat in order to free up port 8080.