HOW TO RUN JAVA RMI PROGRAM

 

Remote Method Invocation(RMI) facilitates object function calls between Java Virtual Machines(JVMs)

Step 1

$ first we create interface program like

           /*interface:inte.java*/

import java.rmi.Remote;

import java.rmi.RemoteException;

public interface inte extends Remote

{

        int add(int a,int b)throws RemoteException;

        int sub(int a,int b)throws RemoteException;

        int mul(int a,int b)throws RemoteException;

        int div(int a,int b)throws RemoteException;

}

$ Save the program as inte.java, and compile the program

Step 2

$ Next create a server program like

            /*Server Program:cserver.java*/

import java.io.*;

import java.rmi.*;

import java.rmi.server.*;

import java.rmi.registry.*;

public class cserver extends UnicastRemoteObject implements inte

{

        public cserver()throws RemoteException

        {

                super();

        }

        public int add(int a,int b)throws RemoteException

        {

                return a+b;

        }

        public int sub(int a,int b)throws RemoteException

        {

                return a-b;

        }

        public int mul(int a,int b)throws RemoteException

        {

                return a*b;

        }

        public int div(int a,int b)throws RemoteException

        {

                return a/b;

        }

       

         public static void main(String args[])

        {

        try

        {

                inte c1=new cserver();

                String I="CI";

                Naming.rebind(I,c1);

                System.out.println("Server bound and started");

        }

        catch(Exception e)

        {

                e.printStackTrace();

        }

        }

}

$ Save the program as cserver.java, and compile the program

Step 3

$ Now create a client program like

            /*Client Program:cclient.java*/

import java.rmi.*;

public class cclient

{

public static void main(String args[])

{

        try

        {

        String I="CI";

        inte c=(inte)Naming.lookup(I);

        System.out.println("Ready to continue");

        int i=c.add(2,3);

        int j=c.sub(3,2);

        int k=c.mul(2,4);

        int l=c.div(4,2);

        System.out.println(i);

        System.out.println(j);

        System.out.println(k);

        System.out.println(l);

        }

        catch(Exception e)

        {}

}

}

$ save the program as cclient.java, and compile like

Step 4

C:\java\jdk1.5.0\bin>javac inte.java

C:\java\jdk1.5.0\bin>javac cserver.java

C:\java\jdk1.5.0\bin>javac cclient.java

C:\java\jdk1.5.0\bin>rmic cserver

C:\java\jdk1.5.0\bin>start rmiregistry

// we see the new empty block cmd prompt

//new window

C:\java\jdk1.5.0\bin>java cserver

Server bound and started.

//new window

C:\java\jdk1.5.0\bin>java cclient

Ready to continue

5

1

8

2

                                                                        Thank you

                                                                     By BOOBALAN

HOW TO RUN C GRAPHICS PROGRAM

Five easy step to make your TC able to run graphics program are as follows.

1.     Download turbo 3 and install.

2.     Open the C:\TC\BGI and select and copy the CGA.BGI and EGAVGA.BGI FILES .

3.     Save the above to files in to C:\TC\BIN\ directory.

4.     Open TC .EXE and click the options->linker->libraries and select the graphics library option.

5.     And now you can compile your graphics program.

  THANK YOU

BY BOOBALAN

How to create java package programs

Hai now i show how to write java package programs and explain with examples

Step 1.
first create a java package like
note:  $ we must create sub directory to store the package
         $ package name and sub directory name are same
$ create a directory like
          c:\program files\java\jdk1.5.0\bin>md student
$ enter the sub directory like
          c:\program files\java\jdk1.5.0\bin>cd student
          c:\program files\java\jdk1.5.0\bin\student>
Step 2.
now we can type the package program
syntax : package packagename;
example :
         c:\program files\java\jdk1.5.0\bin\student>edit
package student;
public class p1
 {
    public void display()
       {
          System.out.println(" this is package");
        }
}

$ save the package as p1.java
$ and exit the program
Step 3.
compile the package program like
          c:\program files\java\jdk1.5.0\bin\student>javac p1.java
with no error go for next step
Step 4.
type the main program
here we just come out the sub directory and create the program like
         c:\program files\java\jdk1.5.0\bin\student>cd..
         c:\program files\java\jdk1.5.0\bin>
go for edit
         c:\program files\java\jdk1.5.0\bin>edit
              
                import student.p1;
                class p2
                  {
                     public static void main(String args[])
                        {
                            p1 ob = new p1();
                            ob.display();
                         }
                   }

$ save and exit the program like p2.java
$ compile and run the program like
          c:\program files\java\jdk1.5.0\bin>javac p2.java
$ without error
         c:\program files\java\jdk1.5.0\bin>java p2
          this is package
         c:\program files\java\jdk1.5.0\bin>


thank you by,  
          R.Boobalan