However, you might want to hide the splash screen programmatically or update the contents of the status text line on the splash screen during the startup phase to provide more extensive feedback to your users.
install4j's launcher client API is automatically available to an application deployed with install4j. For compiling your application, you need to add i4jruntime.jar to the classpath. i4jruntime.jar can be found in the resource directory of your install4j installation.