The default port for Tomcat is 8080. To check if Tomcat is running, open any browser and enter the address  http://localhost:8080. If Tomcat is running, you will see the Tomcat homepage in your browser. You might have set up Tomcat to run on some other port. If that is the case, enter that port number instead of 8080. You can see that port setting in conf/server.xml.