AIM:
To write a Java program for the implementation of stock application using CORBA.
ALGORITHM:
SERVER SIDE:
Step 1: Start
Step 2: Define the class StockMarketServer
Step 3: Initialize the objects orb, StockMarketImpl, objRef, ncRef, nc, path[] in try
Step 4: Connect the object StockMarketImpl
Step 5: Rebind the objects path, StockMarketImpl
Step 6: Make ready the StockMarket server
Step 7: Call the method printStackTrace() in catch
Step 8: Stop
CLIENT SIDE:
Step 1: Start
Step 2: Define the class StockMarketClient
Step 3: Initialize the objects din, orb, ncRef , path[], market in try
Step 4: Read the company name
Step 5: Display the price of the company by calling the method get_price()
Step 6: Call the method printStackTrace() in catch
Step 7: Stop
SOURCE CODE:
StockMarket.idl
module SimpleStocks{
interface StockMarket
{
float get_price(in string symbol);
};
};
StockMarketImpl.java
import org.omg.CosNaming.*;import org.omg.CORBA.*;
import SimpleStocks.*;
public class StockMarketImpl extends _StockMarketImplBase
{
public float get_price(String symbol)
{
float price=0;
if(symbol.equals("TCS"))
price=1000;
else if(symbol.equals("CTS"))
price=800;
else if(symbol.equals("INFOSYS"))
price=1200;
else if(symbol.equals("WIPRO"))
price=900;
else
price=0;
return price;
}
public StockMarketImpl()
{
super();
}
}
StockMarketServer.java
import org.omg.CosNaming.*;import org.omg.CORBA.*;
import SimpleStocks.*;
public class StockMarketServer
{
public static void main(String args[])
{
try
{
ORB orb=ORB.init(args,null);
StockMarketImpl stockMarketImpl=new StockMarketImpl();
orb.connect(stockMarketImpl);
org.omg.CORBA.Object objRef=orb.resolve_initial_references("NameService");
NamingContext ncRef=NamingContextHelper.narrow(objRef);
NameComponent nc=new NameComponent("NASDAQ","");
NameComponent path[]={nc};
ncRef.rebind(path,stockMarketImpl);
System.out.println("Stock market server is ready");
Thread.currentThread().join();
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
StockMarketClient.java
import org.omg.CosNaming.*;import org.omg.CORBA.*;
import SimpleStocks.*;
import java.io.DataInputStream;
public class StockMarketClient
{
public static void main(String args[])
{
try
{
DataInputStream din=new DataInputStream(System.in);
ORB orb=ORB.init(args,null);
NamingContext ncRef=NamingContextHelper.narrow(orb.resolve_initial_references("NameService"));
NameComponent path[]={new NameComponent("NASDAQ","")};
StockMarket market=StockMarketHelper.narrow(ncRef.resolve(path));
System.out.println("\nEnter the company name: ");
String company=din.readLine();
System.out.println("\nPrice of my company is: " +market.get_price(company));
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
OUTPUT:
SERVER SIDE:
RESULT:
Thus the Java program for the implementation of stock application was performed and the output was verified.
.
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