I have been playing around with Google’s Java AppEngine. By default the local development server starts up in port 8080. This kind of messes with my development setup. Every app server I use Weblogic, Tomcat… uses this port by default. To change the port number in eclipse go to Run>Run Configurations…>Web Application><AppEngine Project Name>. In the main tab you can change the port number.
If you are running the application from the command line go to <app engine home>/config/user/ant-macros.xml and change the port number in the “dev_appserver” macro attribute.
If you are just using the Eclipse plugin for AppEngine the SDK is located at <eclipse home>\plugins\com.google.appengine.eclipse.sdkbundle_1.2.0.v200904062334\appengine-java-sdk-1.2.0.