// Interface declaration Hello
import java.rmi.Remote;
import java.rmi.RemoteException;
public interface Hello extends Remote {
String sayHello(String s) throws RemoteException;
}
--------------------------------------------------------------------
//RMI Applet based client
import java.applet.Applet;
import java.awt.Graphics;
import java.rmi.Naming;
import java.rmi.RemoteException;
public class HelloApplet extends Applet {
String message = "blank";
// "obj" is the identifier that we'll use to refer
// to the remote object that implements the "Hello"
// interface
Hello obj = null;
public void init() {
try {
obj = (Hello)Naming.lookup("//" +
getCodeBase().getHost() + "/HelloServer");
message = obj.sayHello();
} catch (Exception e) {
System.out.println("HelloApplet exception: " + e.getMessage());
e.printStackTrace();
}
}
public void paint(Graphics g) {
g.drawString(message, 25, 50);
}
}
import java.rmi.Remote;
import java.rmi.RemoteException;
public interface Hello extends Remote {
String sayHello(String s) throws RemoteException;
}
--------------------------------------------------------------------
//RMI Applet based client
import java.applet.Applet;
import java.awt.Graphics;
import java.rmi.Naming;
import java.rmi.RemoteException;
public class HelloApplet extends Applet {
String message = "blank";
// "obj" is the identifier that we'll use to refer
// to the remote object that implements the "Hello"
// interface
Hello obj = null;
public void init() {
try {
obj = (Hello)Naming.lookup("//" +
getCodeBase().getHost() + "/HelloServer");
message = obj.sayHello();
} catch (Exception e) {
System.out.println("HelloApplet exception: " + e.getMessage());
e.printStackTrace();
}
}
public void paint(Graphics g) {
g.drawString(message, 25, 50);
}
}
----------------------------------------------------------------
//RMI Application based client
import java.rmi.RemoteException;
public class HelloClient {
String message = "blank";
Hello obj = null;
public void display() {
try {
obj = (Hello)Naming.lookup("HelloServer");
message = obj.sayHello("hello");
System.out.println(message);
} catch (Exception e) {
System.out.println("HelloApplet exception: " + e.getMessage());
e.printStackTrace();
}
}
public static void main(String arg[]) {
HelloClient c = new HelloClient();
c.display();
}
}
---------------------------------------------------------------------
//RMI Server
import java.rmi.Naming;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
public class HelloImpl extends UnicastRemoteObject implements Hello {
public HelloImpl() throws RemoteException {
super();
}
public String sayHello(String s) {
s = s + " fine";
return s;
}
public static void main(String args[]) {
try {
HelloImpl obj = new HelloImpl();
// Bind this object instance to the name "HelloServer"
Naming.rebind("HelloServer", obj);
System.out.println("HelloServer bound in registry");
} catch (Exception e) {
System.out.println("HelloImpl err: " + e.getMessage());
e.printStackTrace();
}
}
}
---------------------------------------------------------------
HTML code for executing RMI applet based client
<HTML>
<title>Hello World</title>
<center> <h1>Hello World</h1> </center>
<applet code="HelloApplet" width=500 height=120>
</applet>
</HTML>
No comments:
Post a Comment