By deploying a helloworld.war application, you can learn how server configurations change in the Liberty profile.
The helloworld.war application uses a simple servlet to display a message on your browser. You can create any other messages to be displayed. The coding of the application is not described within the Liberty profile documents.
When you deploy a web application to the Liberty profile by using the developer tools, all configurations related to the application are automatically enabled in the server.xml file. However, you can also configure the server.xml file manually by completing the following steps.
This example uses the helloworld.war application and can be accessed via http://localhost:9090/helloworld. In this example, we create a Liberty profile server instance and change its default HTTP port to 9090, then deploy the application on it.