Java Tutorial

 
 
 
 
// Count.idl

module Counter
{
  interface Count
  { 
    attribute long sum;
    long increment();
    double check(in double a);
  };
}; 


// CountClient.java

import Counter.*;
import org.omg.CosNaming.*;
import org.omg.CosNaming.NamingContextPackage.*;
import org.omg.CORBA.*;
import java.io.*;
class CountClient { 

  static Count countImpl;

  public static void main(String args[])
  { try
    {

       // Initialize the ORB

        org.omg.CORBA.ORB orb = org.omg.CORBA.ORB.init(args, null);

        // get the root naming context
        org.omg.CORBA.Object objRef = 
        orb.resolve_initial_references(\"NameService\");
        // Use NamingContextExt instead of NamingContext. This is 
        // part of the Interoperable naming Service.  
        NamingContextExt ncRef = NamingContextExtHelper.narrow(objRef);

        // resolve the Object Reference in Naming
        String name = \"Count\";
        countImpl = CountHelper.narrow(ncRef.resolve_str(name));

      // Set sum to initial value of 0
      countImpl.sum((int)0);

      int choice=0;
      double value1,num;
      BufferedReader b1=new BufferedReader(new InputStreamReader(System.in));


      while(true)
     {
      System.out.println(\"Do you want to guess a number(1:Yes / 2:No):\");
      choice=Integer.parseInt(b1.readLine());
      if(choice==2)
         break;
      System.out.println(\"Guess a number and enter that number!!\");
      num=Integer.parseInt(b1.readLine());    

      countImpl.increment();


      if(countImpl.sum()==5)
         {
           System.out.println(\"SORRY YOUR 5 TRIALS ARE OVER\");
           System.out.println(\"Trials = \" + countImpl.sum());    
           break;        
         }

      value1=countImpl.check(num);

      if(value1==0)
         {
            System.out.println(\"CONGRATULATIONS!!! GUESSED THE RIGHT NUMBER!!!\");
            System.out.println(\"Trials = \" + countImpl.sum());
        break;    
         }

     else if(value1<0)
         {
            System.out.println(\"NUMBER is less than the actual no!!!\");
            System.out.println(\"Trials = \" + countImpl.sum());
      }

     else if(value1>0)
         {
            System.out.println(\"NUMBER is greater than the actual no!!!\");
            System.out.println(\"Trials = \" + countImpl.sum());
      }

    } 
   }
    catch(Exception e)
    { System.err.println(\"System Exception\");
      System.err.println(e);
    }
  }
}


// CountServer.java: The Count Server main program

import Counter.*;
import org.omg.CosNaming.*;
import org.omg.CosNaming.NamingContextPackage.*;
import org.omg.CORBA.*;
import org.omg.PortableServer.*;
import java.util.*;

class CountImpl extends Counter.CountPOA
{

    private int sum;
    int tempnum;
  // Constructors
  CountImpl(String name)
  {
    super();
    System.out.println(\"Count Object Created\");
    sum = 0;

    Random a=new Random();
    double a1;
    while(true)
     {
       a1=a.nextGaussian()*100;
       if(a1<100 && a1>0)
         break;
     }
    tempnum=(int)a1;
  }

  // get sum
  public  int sum()
  { return sum;
  }

  // set sum
  public  void sum(int val)
  { sum = val;
  }

  // increment method
  public int increment()
  { sum++;
    return sum;
  }

  public double check(double num)
  {
     return(num-tempnum);
 }

}

class CountServer
{
   static public void main(String[] args)
  {
    try
    { 
      // Initialize the ORB

       org.omg.CORBA.ORB orb = org.omg.CORBA.ORB.init(args, null);

      // Initialize the BOA

      POA rootpoa = POAHelper.narrow(orb.resolve_initial_references(\"RootPOA\"));
      rootpoa.the_POAManager().activate();

      // Create the Count object

      CountImpl count = new CountImpl(\"My Count\");

      // get object reference from the servant

      org.omg.CORBA.Object ref = rootpoa.servant_to_reference(count);
      Count href = Counter.CountHelper.narrow(ref);

      // get the root naming context
      // NameService invokes the name service

      org.omg.CORBA.Object objRef =
      orb.resolve_initial_references(\"NameService\");

      // Use NamingContextExt which is part of the Interoperable
      // Naming Service (INS) specification.

      NamingContextExt ncRef = NamingContextExtHelper.narrow(objRef);

      // bind the Object Reference in Naming

      String name = \"Count\";
      NameComponent path[] = ncRef.to_name( name );
      ncRef.rebind(path, href);

      System.out.println(\"HelloServer ready and waiting ...\");

      // wait for invocations from clients
      orb.run();

      }
      catch(Exception e)
      { System.err.println(e);
      }
   }
}


OUTPUT 1 :

E:\\DIPI1\\corba prgs\\numgame>java CountClient -ORBInitialPort 1050 -ORBInitialHost a

Do you want to guess a number(1:Yes / 2:No):
1
Guess a number and enter that number!!
50
NUMBER is less than the actual no!!!
Trials = 1

Do you want to guess a number(1:Yes / 2:No):
1
Guess a number and enter that number!!
75
NUMBER is greater than the actual no!!!
Trials = 2

Do you want to guess a number(1:Yes / 2:No):
1
Guess a number and enter that number!!
73
NUMBER is greater than the actual no!!!
Trials = 3

Do you want to guess a number(1:Yes / 2:No):
1
Guess a number and enter that number!!
72
CONGRATULATIONS!!! GUESSED THE RIGHT NUMBER!!!
Trials = 4


OUTPUT 2 :

E:\\DIPI1\\corba prgs\\numgame>java CountClient -ORBInitialPort 1050 -ORBInitialHos
t a
Do you want to guess a number(1:Yes / 2:No):
1
Guess a number and enter that number!!
23
NUMBER is less than the actual no!!!
Trials = 1

Do you want to guess a number(1:Yes / 2:No):
1
Guess a number and enter that number!!
56
NUMBER is less than the actual no!!!
Trials = 2

Do you want to guess a number(1:Yes / 2:No):
1
Guess a number and enter that number!!
78
NUMBER is greater than the actual no!!!
Trials = 3

Do you want to guess a number(1:Yes / 2:No):
1
Guess a number and enter that number!!
67
NUMBER is greater than the actual no!!!
Trials = 4

Do you want to guess a number(1:Yes / 2:No):
1
Guess a number and enter that number!!
56
SORRY YOUR 5 TRIALS ARE OVER
Trials = 5

    Related Post:
  1. Program to read the table elements into a two-dimensional array temperature

  2. Develop a game application in CORBA for which the player will guess a number between 1 to 100, which will be compared to the random number generated b

  3. corba program of client and a DNS server where given a URL the server sends back an IP address

  4. Program to show an example of Arrays of String

  5. An applet program that creates string dynamically and displays it

  6. Program to show an example of Overriding a Base Class Method

  7. Program to read bytes from a file

  8. Program of storing and retrieving integers using data streams on a single file

  9. GUI application in java, which enter the details of a student and on the submit display the details of the student

  10. Write a class whose objects holds a current value and have a method to add that value, printing the new value

  11. File handling program to copy characters from one file to another

  12. Program that maintains employee database of an education system

  13. Program to show insertion of StringBuffer, String objects and other Basic Data Types into a StringBuffer object

  14. Program using session tracking capability of Servlets, which displays information of current user session by HttpServletRequest object

  15. Program to show an example of using a Static Nested Class outside the Top-Level Class

  16. An applet program that displays Text at the center of the string which is passed as parameter

  17. Even number ,Prime no. ,Factorial of a number

  18. Program to show the use of Logical OR Operator (|) in If Statements

  19. Program of binary search tree

  20. Program which creates an Array of character. Make one function with one argument as a character and that function throw a user defined exception