In both IDEs, the Vaadin plugin helps us jumpstart a project in a matter of minutes. However, it may be interesting to understand what is really done in the created project by the plugin in case we need to do it manually in other IDEs which don't have such plugins.
First, we should add the Vaadin library to the web application's
WEB-INF/lib folder. According to Java EE specifications, this means that our code can now access the Vaadin JAR as it is on the web application's classpath.
Then, we also need to create a class named
com.packt.vaadin.MyApplication as defined in our preceding sample application. Now, if we look at this class, we can see that it inherits from