// PriceRmi Interfacepublicinterface PriceRMI extends java.rmi.Remote
{
    double calctotal(double prices[],double perkg[],int itemno[],double quantity[],int Count) throws java.rmi.RemoteException;
}


// PriceRMIImpl.java, PriceRMI implementation

import java.rmi.*;
import java.rmi.server.UnicastRemoteObject;

publicclass PriceRMIImpl extends UnicastRemoteObject
       implements PriceRMI
{
  
  public PriceRMIImpl(String name) throws RemoteException
  {
    super();
    try
    {
      Naming.rebind(name, this);
    } catch (Exception e)
    { System.out.println("Exception: " + e.getMessage());
      e.printStackTrace();
    }
  }

  publicdouble calctotal(double prices[],double perkg[],int itemno[],double quantity[],int count) throws RemoteException
  { 
    double total=0.0;
    for(int i = 0;i<count;i++)
    {
        total = total+(quantity[i] * (prices[itemno[i]-1]/perkg[itemno[i]-1]));
    }
    return total;    

        
  }


}


// PriceRMIServer.java

import java.rmi.*;
import java.rmi.server.*;

publicclass PriceRMIServer
{

 publicstaticvoid main(String args[])
 {

   // Create and install the security manager
   System.setSecurityManager(new RMISecurityManager());

   try
   {
     // Create ProceRMIImpl
     PriceRMIImpl myPrice = new PriceRMIImpl("//Binita/myPriceRMI");
     System.out.println("PriceRMI Server ready.");
   } catch (Exception e)
   { System.out.println("Exception: " + e.getMessage());
     e.printStackTrace();
   }
 }
}


// PriceRMIClient.java  RMI Price client

import java.rmi.*;
import java.rmi.registry.*;
import java.rmi.server.*;
import java.io.*;
import java.lang.*;
import java.io.DataInputStream;


publicclass PriceRMIClient
{ 
  publicstaticvoid main(String args[]) throws Exception
  { // Create and install the security manager
    System.setSecurityManager(new RMISecurityManager());

    FileReader fr = new FileReader("pricedetails.txt");
    StreamTokenizer tok = new StreamTokenizer(fr);
    DataInputStream in = new DataInputStream(System.in);
    String items[]=new String[10];
    int flag1=0,flag2=1,i=0;
    double prices[] = newdouble[10],totalamt;
    double perkg[] = newdouble[10];
    int itemno[] = newint[10],choice;
    double quantity[] = newdouble[10];    
    tok.eolIsSignificant(true);
    try
    { 
    PriceRMI myPrice = (PriceRMI)Naming.lookup("//"
                          + args[0] + "/" + "myPriceRMI");


    while( tok.nextToken() != tok.TT_EOF)
    {
        if(tok.ttype == tok.TT_EOL)
        {
            i++;
            flag1 = 0;
            //System.out.println("one record read");
        }
        
        if(tok.ttype == tok.TT_WORD && flag1 == 0)
        {
            items[i]= tok.sval;
            flag1 = 1;
        }
        if(tok.ttype == tok.TT_NUMBER && perkg[i] <= 0.0 && prices[i] > 0.0)
        {
            perkg[i] = tok.nval;    
            //System.out.println("perkg is:"+perkg[i]);
        }

        if(tok.ttype == tok.TT_NUMBER && prices[i] <= 0.0)
        {        
            prices[i] = tok.nval;    
            //System.out.println("price is:"+prices[i]);
        }
        
    }
    fr.close();
    System.out.println("Item no   Item name");
    for(int k = 0;k<=i;k++)
    {
        System.out.println(k+1 +"\t  " + items[k]);
    }
    i=0;
    do
    {
        System.out.println("Enter the item no");
        itemno[i] = Integer.parseInt(in.readLine());
        System.out.println("Enter Quantity");
        quantity[i]=Double.parseDouble(in.readLine());
        i++;
        System.out.println("Enter 1 for enter item otherwise enter 0");
        choice = Integer.parseInt(in.readLine());
    }while(choice != 0);            
    
    totalamt = myPrice.calctotal(prices,perkg,itemno,quantity,i);    
    System.out.println("The total of purchased items is:"+totalamt);
    } catch(Exception e)
    { System.err.println("System Exception" + e);
    }
   System.exit(0);
  }
}


// OUTPUT

-----  pricedetails.txt  ------

potatoes Rs 17 per 5 kg
tomatoes Rs 8 per 1 kg
onions Rs 20 per 5 kg
spanich Rs 12 per 1 kg
cabage Rs 15 per 2 kg
carrat Rs 14 per 3 kg
---------------------------



Item no   Item name
1         potatoes
2         tomatoes
3         onions
4         spanich
5         cabage
6         carrat
Enter the item no
1
Enter Quantity
20
Enter 1 for enter item otherwise enter 0
1
Enter the item no
3
Enter Quantity
40
Enter 1 for enter item otherwise enter 0
1
Enter the item no
4
Enter Quantity
50
Enter 1 for enter item otherwise enter 0
0
The total of purchased items is:828.0


---------


Item no   Item name
1         potatoes
2         tomatoes
3         onions
4         spanich
5         cabage
6         carrat
Enter the item no
2
Enter Quantity
20
Enter 1 for enter item otherwise enter 0
1
Enter the item no
6
Enter Quantity
70
Enter 1 for enter item otherwise enter 0
1
Enter the item no
5
Enter Quantity
30
Enter 1 for enter item otherwise enter 0
0
The total of purchased items is:711.6666666666667