DS experiment no 1

EXP 1

SERVER  PROCESS

import java.io.*;import java.net.*;class ser{  public static void main(String[] args) throws Exception {  ServerSocket sersock = new ServerSocket(3000);  System.out.println("Server ready");  Socket sock = sersock.accept( );  BufferedReader keyRead = new BufferedReader(new InputStreamReader(System.in));  OutputStream ostream = sock.getOutputStream();  PrintWriter pwrite = new PrintWriter(ostream, true);   InputStream istream = sock.getInputStream();  BufferedReader receiveRead = new BufferedReader(new InputStreamReader(istream));    String receiveMessage, sendMessage,fun;  int a,b,c;  while(true)  {fun = receiveRead.readLine();   if(fun != null)    System.out.println("Operation : "+fun);   a = Integer.parseInt(receiveRead.readLine());   System.out.println("Parameter 1 : "+a);   b = Integer.parseInt(receiveRead.readLine());   if(fun.compareTo("add")==0)   {  c=a+b;    System.out.println("Addition = "+c);    pwrite.println("Addition = "+c);  }   if(fun.compareTo("sub")==0)   { c=a-b;    System.out.println("Substraction = "+c);    pwrite.println("Substraction = "+c);   }   if(fun.compareTo("mul")==0)   { c=a*b;    System.out.println("Multiplication = "+c);    pwrite.println("Multiplication = "+c);   }   if(fun.compareTo("div")==0)   {  c=a/b;    System.out.println("Division = "+c);    pwrite.println("Division = "+c);   }   System.out.flush(); }  } }

 

CLIENT PROCESS

import java.io.*;import java.net.*;class cli{ public static void main(String[] args) throws Exception{  Socket sock = new Socket("127.0.0.1", 3000);  BufferedReader keyRead = new BufferedReader(new InputStreamReader(System.in));  OutputStream ostream = sock.getOutputStream();  PrintWriter pwrite = new PrintWriter(ostream, true);  InputStream istream = sock.getInputStream();  BufferedReader receiveRead = new BufferedReader(new InputStreamReader(istream));    System.out.println("Client ready, type and press Enter key");  String receiveMessage, sendMessage,temp;  while(true)  {   System.out.println("\nEnter operation to perform(add,sub,mul,div)....");   temp = keyRead.readLine();   sendMessage=temp.toLowerCase();   pwrite.println(sendMessage);   System.out.println("Enter first parameter :");   sendMessage = keyRead.readLine();   pwrite.println(sendMessage);   System.out.println("Enter second parameter : ");   sendMessage = keyRead.readLine();   pwrite.println(sendMessage);   System.out.flush();   if((receiveMessage = receiveRead.readLine()) != null)    System.out.println(receiveMessage);  }}}  OUTPUT