How to run a class that loops forever on Tomcat startup?

Hi, I would like to run a program that loops forever, in the background, when Tomcat starts. I created MyServlet.java, and in its init() method, I included the following code...

while(true){
    System.out.println("Hello world!");
    Thread t = new Thread();
    t.sleep(60000);
}

So basically the code will output "Hello world!" to the console every minute.

In my web.xml, I included the following tag...

<servlet>
	<servlet-name>MyServletJob</servlet-name>
	<servlet-class>com.MyServlet</servlet-class>
	<load-on-startup>1</load-on-startup>
</servlet>

So my Tomcat will execute MyServlet when it starts.

The problem is that I can't access the web application at all since MyServlet is still running. Since it will run continuously until the Tomcat shuts down, that means I can't access the web application at all. How do I run a program, that loops continuously, in the background, whenever Tomcat starts, and which will not affect the other servlets in my web application? Thanks!