なぜこれが実行時エラーになっているのかわかりません。問題をグーグルで調べたところ、コンパイル時に利用できたクラスが実行時に利用できなくなったと書かれています。
これはコードです：
package examples.RMIShape;
import java.rmi.*;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
//import java.rmi.server.UnicastRemoteObject;
public class ShapeListServer {
public static void main(String args[]){
// System.setSecurityManager(new RMISecurityManager());
System.out.println("Main OK");
try{
ShapeList aShapelist = new ShapeListServant();
System.out.println("After create");
String registryURL = "rmi://localhost:" + "/ShapeList";
startRegistry();
Naming.rebind(registryURL, aShapelist);
System.out.println("ShapeList server ready");
}catch(Exception e) {
System.out.println("ShapeList server main " + e.getMessage());
}
}
// This method starts a RMI registry on the local host, if it
// does not already exists at the specified port number.
private static void startRegistry()throws RemoteException{
Registry registry;
try {
registry = LocateRegistry.getRegistry();
registry.list( ); // This call will throw an exception
// if the registry does not already exist
}
catch (RemoteException e) {
// No valid registry at that port.
System.out.println ("RMI registry cannot be located at port " + Registry.REGISTRY_PORT );
registry = LocateRegistry.createRegistry(Registry.REGISTRY_PORT);
System.out.println("RMI registry created at port " + Registry.REGISTRY_PORT);
}
} // end startRegistry
}