public class HelloWorld extends JAddinThread {
​
	// This is the main entry point. When this method returns, the add-in terminates.
	public void addinStart() {
		
		logMessage("Started with parameters " + getAddinParameters());
		
		try {
			logMessage("Running on " + dbGetSession().getNotesVersion());
		} catch (Exception e) {
			logMessage("Unable to get Domino version: " + e.getMessage());
		}
​
		// Main add-in loop ...
		while (true) {
			logMessage("User code is executing ...");
			waitMilliSeconds(15000L);
		}
	}
​
	// This callback method is called by the JAddin framework when the
	// command 'Quit' or 'Exit' is entered or at Domino server shutdown. Here
	// you may signal the addinStart() method to terminate and to perform any cleanup.
	public void addinStop() {
		logMessage("Termination in progress");
	}
	
	// This callback method is called by the JAddin framework for any
	// console command entered. It should be executed as quickly as possible
	// to avoid any main Domino message queue delays.
	public void addinCommand(String command) {
		logMessage("You have entered the command " + command);
	}
}

> Load RunJava JAddin HelloWorld
03.02.2019 09:31:47   JVM: Java Virtual Machine initialized.
03.02.2019 09:31:47   RunJava: Started JAddin Java task.
03.02.2019 09:31:47   HelloWorld: Started with parameters null
03.02.2019 09:31:47   HelloWorld: Running on Release 10.0.1 November 29, 2018
03.02.2019 09:31:47   HelloWorld: User code is executing...
03.02.2019 09:32:02   HelloWorld: User code is executing...
03.02.2019 09:32:17   HelloWorld: User code is executing...
03.02.2019 09:32:32   HelloWorld: User code is executing...