How to change port of tomcat from eclipse's tomcat plugin

Just double click on the server listed in Eclipse. Here It will display Server Configuration. Just change the port Number like from 8080 to 9080. and start your server. Dialog box will appear to save the changes. Click yes and server will start. Hope it'll help you.

For details refer; link

Open Eclipse Get Server view form Window -> Show View -> Servers Then double click the tomcat server Configuration window open and you can change the ports there.