Web Application design and development (Rahul kumar)

AddC.java

package rmi;
/**
 * This file contains class which have implemention of AddI interface
 */
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;

/**
 * This class defines add method, which is called by the client. 
 * @version 1.0
 * @author Rahul kumar
 *
 */
public class AddC extends UnicastRemoteObject implements AddI{
	/**
	 * This is constructor. This constructor will call parent class
	 * constructor indirectly. 
	 * @throws RemoteException
	 */
	protected AddC() throws RemoteException {
		super();
	}
	/**
	 * This method will return sum of both arguments.
	 * @param x first number
	 * @param y second number
	 * @return x+y result
	 * @throws Exception
	 */
	@Override
	public int add(int x, int y) throws Exception {
		return x+y;
	}
	
}

AddI.java

package rmi;
/**
 * This file contains interface AddI.
 */
import java.rmi.Remote;
/**
 * This interface contains method AddI.
 * @version 1.0
 * @author Rahul kumar
 *
 */
public interface AddI extends Remote{
	/**
	 * This method accepts two integer arguments. 
	 * This method return an integer number. 
	 * @param x first number.
	 * @param y  second number
	 * @return number( result)
	 * @throws Exception
	 */
	public int add(int x,int y) throws Exception;
}

Client.java

package rmi;
/**
 * This package contains client class. 
 */
import java.rmi.Naming;
/**
 * This class represent Client.
 * Thsi class will call method add, from the server.
 * @class Client
 * @author Rahul kumar
 *
 */
public class Client {
	/**
	 * This is main method. 
	 * @param args unused
	 * @throws Exception
	 */
	public static void main(String[] args) throws Exception{
		//search for the method add by looking the reference "ADD"
		AddI obj=(AddI)Naming.lookup("ADD");
		// call the method
		int sum=obj.add(5, 5);
		// print the result
		System.out.println("Sum is : "+sum);
	}
}

Server.java

package rmi;
/**
 * @author Rahul kumar
 * This has server class which represent remote server.
 */
import java.rmi.Naming;
/**
 * @class Server
 * @version 1.0
 * This class will provide service to the client. 
 */
public class Server {
	/**
	 * This method will serve client.
	 * @param args unused
	 * @throws Exception
	 */
	public static void main(String[] args) throws Exception{
		// create object of AddC
		AddC obj=new AddC(); 
		// bind this object with "ADD", this object will be referenced by "ADD"
		Naming.rebind("ADD", obj); 
		// print message ...
		System.out.println("SERVER.........STARTED");
	}
}

Use and install.md

1. • Open a terminal.

   • Go to the path where java files are stored.
   • Compile all java files => javac *.java
   • Create Stub and Skelton => rmic AddC
   • Start server => java Server

2. • Open a another terminal.

   • Start Client => java Client