old problem
so,i can not solve this problem :
i have wrote a eseay RMI API:
import java.rmi.*;
public interface Calculator extends Remote{
public int addNum(int x,int y) throws RemoteException;
}
import java.rmi.*;
import java.rmi.server.UnicastRemoteObject;
public class CalculatorImpl implements Calculator{
/*public CalculatorImpl() throws RemoteException{
UnicastRemoteObject.exportObject(this);
}*/
public int addNum(int x,int y) throws RemoteException{
System.out.println("Client request to calculate...");
return x+y;
}
}
then my Server :
//import java.rmi.server.*;
import java.rmi.*;
import java.rmi.server.UnicastRemoteObject;
//import java.rmi.registry.*;
public class CalculatorServer {
public static void main(String[]args){
try{
CalculatorImpl c=new CalculatorImpl();
System.out.println("exporting Calculator ...");
Calculator cal=(Calculator) UnicastRemoteObject.exportObject(c);
//Registry registry=LocateRegistry.getRegistry();
Naming.rebind("http://localhost:1099/MyCalculator",cal);
System.out.println("Register Calculator");
}catch(Exception e){
e.printStackTrace();
e.toString();
}
}
}
and my Client :
import java.rmi.*;
public class CalculatorClient {
public static void main(String[]args){
try{
System.out.println("Finding object ...");
Calculator c=(Calculator)Naming.lookup("rmi://localhost/MyCalculator");
if(c.equals(null))
System.out.println("Object not found");
System.out.println(c.addNum(12, 3));
}catch(Exception e){
e.printStackTrace();
e.toString();
}
}
}
then , i got CalculatorImpl_Stub and CalculatorImpl_Skel class but when i try calling java CalculatorServer it is always errors :
java.net.MalformedURLException: invalid URL scheme : http://localhost:1099/MyCalculator
at java.rmi.Naming.parseURL(Unknown Source)
at java.rmi.Naming.rebind(Unknown Source)
at CalculatorServer.main(CalculatorServer.java:12)
need helps,thanks
