what make rmi server keep running?

Question

I have the following RMI server code:

public class ServerProgram {
    public ServerProgram() {
        try {
            LocateRegistry.createRegistry(1097);
            Calculator c = new CalculatorImpl();
            String name = "rmi://host:port/name";
            Naming.rebind(name, c);
            System.out.println("Service is bound......");
        } catch (Exception e) {
        }
    }
    public static void main(String[] args) {
        new ServerProgram();
    }
}

When the above program running, it keeps running to wait for client requests. But what I do not understand is what make that program keeps running while it is not in something like while(true){}; and how to stop it from listening, except stopping the whole program?

Answer 1

What makes it keep running is a non-daemon listening thread started by RMI. To make it exit, unbind the name and unexport both the Registry and the remote object, with UnicastRemoteObject.unexportObject().