Add Tomcat 8 to Eclipse Photon, Create Dynamic Web Project

Start with a basic Eclipse Photon and Java 10 environment. Install Tomcat 8, create a new Dynamic Web Project, and then associate the project with Tomcat. Create a Tomcat server in Eclipse, and deploy the project in the server. Then, start the server, and view the page. After that, look at the configuration of Tomcat: where is the Web App name listed? How can it be changed? Why does Tomcat use port 8080 by default? How can that be changed?