1. IADCS Diploma Course Distributed Programming with Java U Nyein Oo COO/Director(IT) Myanma Computer Co., Ltd

5. IPL at Client Machine User Interface Layer (Web Browser) Information Processing Layer (Application Client) Information Storage Layer (Application Server) Client Machine Server Machine

6. IPL at Server Machine User Interface Layer (Web Browser) Information Processing Layer (Application Client) Information Storage Layer (Application Server) Client Machine Server Machine

15. Method invocation in CORBA IDL Stub IDL Skeleton Client Host Server Host client Object Server Object ORB

22. Three tier Architecture of Java RMI Client Object Server Object Stub Skeleton Remote Reference Layer Remote Reference Layer Transport Layer Transport Layer Lower Layer Protocols Lower Layer Protocols

34. Genreation Remote Interface //remote interface import java.net.*; import java.security.*; import java.rmi.*; public interface MyServer extends java.rmi.Remote{ String getAndSetMessage(String message) throws java.rmi.RemoteException; }

35. Generation Client RMI import java.rmi.RMISecurityManager; import java.rmi.Naming; import java.net.*; import java.security.*; public class MyClient{ public static void main(String args[]){ System.setSecurityManager(new RMISecurityManager()); try{ MyServerser=(MyServer)Naming.lookup("//147.81.10.2/ServerTest"); String serverString=ser.getAndSetMessage("I amd Trying "); System.out.println("reply from the server is "+serverString); }catch(Exception e){ System.out.println(e); } } }

36. Generation Server RMI import java.rmi.*; import java.rmi.server.*; import java.rmi.registry.*; import java.security.*; import java.net.*; public class MyServerImpl extends UnicastRemoteObject implements MyServer{ static String hostName="147.81.10.2"; String name; public MyServerImpl(String name) throws RemoteException{ super(); this.name=name; }

37. Generation Server RMI (cont) public String getAndSetMessage(String message)throws RemoteException{ return("My name is "+name+"Thanks for message"+message); } public static void main(String args[]){ System.setSecurityManager(new RMISecurityManager()); try{ String objectname="Servertest"; MyServerImpl theServer=new MyServerImpl(objectname); Naming.rebind("//"+hostName+"/"+objectname,theServer); System.out.println("I am Registered"); }catch(Exception e) { System.out.println(e); } }}

40. Example-2(Remote Interface) //Remote Interface import java.rmi.*; import java.net.*; public interface Server1 extends Remote { public void doSomething() throws RemoteException; }

41. Client Remote import java.rmi.*; import java.net.*; import java.rmi.server.*; public class Client1 { public static void main(String[] args) { System.setSecurityManager(new RMISecurityManager()); try { Server1 ro = (Server1)Naming.lookup("doSomething"); System.out.println("Location: "+System.getProperty("LOCATION")); ro.doSomething(); } catch (Exception e){ e.printStackTrace(); System.exit(-1); } } }

42. Server Remote import java.rmi.*; import java.rmi.server.*; import java.rmi.registry.*; public class Server1Impl extends java.rmi.server.UnicastRemoteObject implements Server1 { public static void main(String[] args) { System.setSecurityManager(new RMISecurityManager()); try { Server1Impl obj = new Server1Impl(); Naming.rebind("doSomething", obj); System.out.println("doSomething bound in registry"); } catch (Exception e) { e.printStackTrace(); return; } }

43. Server Remote (cont) public Server1Impl() throws RemoteException { } public void doSomething() throws RemoteException { System.out.println("This message is printed by the Server1 object"); System.out.println("Location: " + System.getProperty("LOCATION")); } }

44. Invoke rmi registry & Run Client Remote

45. Running Remote Server