Program – 6

Program – 6

Client

import java.io.*;

import java.net.*;

class cli

{

public static void main(String ar[])

   {

try

    {

       Socket s=new Socket("localhost",1111);

DataInputStream in=new DataInputStream(System.in);

PrintStream p=new PrintStream(s.getOutputStream());

       String str;

System.out.println("Enter Expression");

str=in.readLine();

p.println(str);

    }

catch(Exception e)

    {

    }

  }

 }

Server-1

import java.io.*;

import java.net.*;

importjava.util.*;

class ser1

{

public static void main(String ar[])

   {

try

     {

ServerSocketss=new ServerSocket(1111);

       Socket s=ss.accept();

StringTokenizer t1,t2,t3,t4;

       String str;

       Socket s1=new Socket("localhost",1112);

       Socket s2=new Socket("localhost",1113);

PrintStream p1=new PrintStream(s1.getOutputStream());

PrintStream p2=new PrintStream(s2.getOutputStream());

DataInputStream din=new DataInputStream(s.getInputStream());

str=din.readLine();

       t1=new StringTokenizer(str,"+");

       t2=new StringTokenizer(str,"-");

       t3=new StringTokenizer(str,"*");

       t4=new StringTokenizer(str,"/");

if((t1.countTokens()>1)||(t2.countTokens()>1))

       {

System.out.println("Pluse or Minus");

p1.println(str);

       }

if((t3.countTokens()>1)||(t4.countTokens()>1))

       {

System.out.println("Multiply or Division");

p2.println(str);

       }

     }

catch(Exception e)

     {

     }

   }

}

Server-2

import java.io.*;

import java.net.*;

importjava.util.*;

class ser2

{

public static void main(String ar[])

  {

try

  {

ServerSocketss=new ServerSocket(1112);

    Socket s=ss.accept();

DataInputStream din=new DataInputStream(s.getInputStream());

    String str,str1,str2;

StringTokenizer t1,t2;

inti,j,k;

str=din.readLine();

    t1=new StringTokenizer(str,"+");

    t2=new StringTokenizer(str,"-");

if(t1.countTokens()>1)

    {

System.out.println("Pluse");

     str1=t1.nextToken();

     i=Integer.parseInt(str1);

System.out.println("Op1  "+i);

     str2=t1.nextToken();

     j=Integer.parseInt(str2);

System.out.println("Op2  "+j);

     k=i+j;

System.out.println("Result is "+k);

    }

if(t2.countTokens()>1)

    {

System.out.println("Minus");

     str1=t2.nextToken();

     i=Integer.parseInt(str1);

System.out.println("Op1"+i);

     str2=t2.nextToken();

     j=Integer.parseInt(str2);

System.out.println("Op2"+j);

     k=i-j;

System.out.println("Result is "+k);  

    }

  }

catch(Exception e)

  {

  }

 }

}

Server-3

import java.io.*;

importjava.util.*;

import java.net.*;

class ser3

{

public static void main(String ar[])

  {

try

  {

ServerSocketss=new ServerSocket(1113);

    Socket s=ss.accept();

DataInputStream din=new DataInputStream(s.getInputStream());

    String str,str1,str2;

StringTokenizer t1,t2;

inti,j,k;

str=din.readLine();

    t1=new StringTokenizer(str,"*");

    t2=new StringTokenizer(str,"/");

if(t1.countTokens()>1)

    {

System.out.println("Multiply");

     str1=t1.nextToken();

     i=Integer.parseInt(str1);

System.out.println("Op1:  "+i);

     str2=t1.nextToken();

     j=Integer.parseInt(str2);

System.out.println("Op2 : "+j);

     k=i*j;

System.out.println("Result is :"+k);

    }

if(t2.countTokens()>1)

    {

System.out.println("Divide");

     str1=t2.nextToken();

     i=Integer.parseInt(str1);

System.out.println("Op1 :"+i);

     str2=t2.nextToken();

     j=Integer.parseInt(str2);

System.out.println("Op2 :"+j);

     k=i/j;

System.out.println("Result is "+k); 

    }

  }

catch(Exception e)

  {

  }

 }

}