Itz me

PRACTICAL NO: 3

AIM: Write a TCP program that will calculate factorial for client.

Server side code:

import java.io.*;

import java.net.*;

class tcpServerFact

{

public static void main(String args[])

{

try

{

ServerSocket ss=new ServerSocket(8001);

System.out.println("server started");

Socket s=ss.accept();

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

String str=ifc.readLine();

System.out.println("the number is:"+str);

int fact=1;

int a=Integer.parseInt(str);

for(int i=1;i<=a;i++)

{

fact=fact*i;

}

String str1=fact+"\n";

DataOutputStream otc=new DataOutputStream(s.getOutputStream());

otc.writeBytes(str1);

}

catch(Exception e)

{

e.printStackTrace();

}

Client side code:

import java.io.*;

import java.net.*;

class tcpClientFact

{

public static void main(String args[])

{

try

{

Socket cs=new Socket("LocalHost",8001);

System.out.println("enter number:");

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

String str=br.readLine();

DataOutputStream out=new DataOutputStream(cs.getOutputStream());

out.writeBytes(str+"\n");

DataInputStream in=new DataInputStream(cs.getInputStream());

String str1=in.readLine();

System.out.println("factorial of"+str+"is:"+str1);

}

catch(Exception e)

{

e.printStackTrace();

}

} }

PRACTICAL NO: 4

AIM: Write a TCP program to show the echo system from client to Server.

Server side code:

import java.io.*;

import java.net.*;

class tcpServerEcho

{

public static void main(String agrs[])

{

try

{

ServerSocket ss=new ServerSocket(8001);

System.out.println("server started");

Socket s=ss.accept();

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

DataOutputStream otc=new DataOutputStream(s.getOutputStream());

String input;

while((input=ifc.readLine())!=null)

{

System.out.println("server:"+input);

otc.writeBytes(input+"\n");

if(input.equals("Bye."))

break;

}

ss.close();

}

catch(Exception e)

{

e.printStackTrace();

}

Client side code:

import java.io.*;

import java.net.*;

class tcpClientEcho

{

public static void main(String args[])

{

try

{

Socket cs=new Socket("LocalHost",8001);

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

DataOutputStream ots=new DataOutputStream(cs.getOutputStream());

DataInputStream ifs=new DataInputStream(cs.getInputStream());

String uinput;

System.out.println("enter Bye. to stop");

System.out.println("input:");

while((uinput=br.readLine())!=null)

{

ots.writeBytes(uinput+"\n");

System.out.println("echo:"+ifs.readLine());

if(uinput.equals("Bye."))

break;

System.out.println("input:");

}

cs.close();

}

catch(Exception e)

{

e.printStackTrace();

}

PRACTICAL NO: 5

AIM: Write a TCP program to show the Chatting between client and Server.

Server side code:

import java.io.*;

import java.net.*;

class tcpServerChat

{

public static void main(String args[])

{

try

{

ServerSocket ss = new ServerSocket(8001);

System.out.println("server started");

Socket s = ss.accept();

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

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

DataOutputStream out = new DataOutputStream(s.getOutputStream());

String receive,send ;

while((receive = in.readLine()) != null)

{

if(receive.equals("STOP"))

break;

System.out.println("Client says : " + receive);

System.out.println("Server says: ");

send=br.readLine();

out.writeBytes(send+”\n”);

}

catch(Exception e)

{

e.printStackTrace();

}

Client side code:

import java.io.*;

import java.net.*;

class tcpClientChat

{

public static void main(String arg[])

{

try

{

Socket cs = new Socket("LocalHost" , 8001);

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

DataOutputStream out = new DataOutputStream(cs.getOutputStream());

DataInputStream in= new DataInputStream(cs.getInputStream());

String msg ;

System.out.println("enter STOP to stop chatting");

System.out.println("Client says : ");

while((msg = br.readLine()) != null)

{

out.writeBytes(msg + "\n");

if(msg.equals("STOP"))

break;

System.out.println("Server says : " + in.readLine());

System.out.println("Client says: ");

}

catch(Exception e)

{

e.printStackTrace();

}

PRACTICAL NO:6

Aim: Write a java client Server udp code in where client sends a number to server and the server gives words representation of the number.

Server Side Code:

import java.net.*;

import java.io.*;

class tcpServerWord

{

public static void main(String args[])

{

try

{

ServerSocket ss = new ServerSocket(8001);

System.out.println("Server Started.......");

Socket s = ss.accept();

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

String no = in.readLine();

System.out.println(no);

String a = convertDigit(no);

System.out.println(a);

DataOutputStream otc = new DataOutputStream(s.getOutputStream());

otc.writeBytes(a+"\n");

}

catch(Exception e)

{

e.printStackTrace();

}

public static String convertDigit(String no) throws Exception

{

String str="";

for(int i=0;i

{

int p=no.charAt(i);

if(p==48)

{

str+="zero";

}

if(p==49)

{

str+="one";

}

if(p==50)

{

str+="two";

}

if(p==51)

{

str+="three";

}

if(p==52)

{

str+="four";

}

if(p==53)

{

str+="five";

}

if(p==54)

{

str+="six";

}

if(p==55)

{

str+="seven";

}

if(p==56)

{

str+="eight";

}

if(p==57)

{

str+="nine";

}

return str;

}

Client Side Code:

import java.net.*;

import java.io.*;

class tcpClientWord

{

public static void main(String args[])

{

try

{

Socket cs = new Socket("LocalHost",8001);

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

System.out.println("Enter a number : ");

String str = br.readLine();

DataOutputStream out = new DataOutputStream(cs.getOutputStream());

out.writeBytes(str + "\n");

DataInputStream in = new DataInputStream(cs.getInputStream());

System.out.println("The converted representation is :"+in.readLine());

cs.close();

}

catch(Exception e)

{

System.out.println(e.toString());

}

PRACTICAL NO:7

Aim: Write a java client Server udp code in which a client greets the server and the server send date and time to the client.

Server Side Code:

import java.io.*;

import java.net.*;

import java.util.*;

public class udpServerTime

{

public static void main(String args[])

{

try

{

DatagramSocket ds=new DatagramSocket(2000);

System.out.println("Waiting for client....");

byte b1[]=new byte[1024];

DatagramPacket dp1=new DatagramPacket(b1,b1.length);

ds.receive(dp1);

String name=new String(dp1.getData(),0,dp1.getLength());

System.out.println(name);

byte b2[]=new byte[1024];

Date d=new Date();

String time=d.toString();

String output="Hello... \nThe current date and time is:"+time;

b2=output.getBytes();

DatagramPacket dp2=new DatagramPacket(b2,b2.length,InetAddress.getLocalHost(),1000);

ds.send(dp2);

}

catch(Exception e)

{

e.printStackTrace();

}

Client side code:

import java.io.*;

import java.net.*;

public class udpClientTime

{

public static void main(String args[])

{

try

{

DatagramSocket ds=new DatagramSocket(1000);

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.println("Enter your name:");

String name=br.readLine();

String s="Hi, I am"+name;

byte b1[]=new byte[1024];

b1=s.getBytes();

DatagramPacket dp1=new DatagramPacket(b1,b1.length,InetAddress.getLocalHost(),2000);

ds.send(dp1);

byte b2[]=new byte[1024];

DatagramPacket dp2=new DatagramPacket(b2,b2.length);

ds.receive(dp2);

String str=new String(dp2.getData(),0,dp2.getLength());

System.out.println("\n"+str);

}

catch(Exception e)

{

e.printStackTrace();

}

PRACTICAL NO:8

Aim: Write a java Client/Server udp code where client sends two numbers to server and server returns greatest among them.

Server Side code:

import java.io.*;

import java.net.*;

public class udpServerMax

{

public static void main(String args[])

{

try

{

DatagramSocket ds=new DatagramSocket(4000);

byte b[]=new byte[1024];

byte b1[]=new byte[1024];

byte b2[]=new byte[1024];

String str2=new String();

DatagramPacket dp=new DatagramPacket(b,b.length);

ds.receive(dp);

String str=new String(dp.getData(),0,dp.getLength());

int num1=Integer.parseInt(str);

DatagramPacket dp1=new DatagramPacket(b1,b1.length);

ds.receive(dp1);

String str1=new String(dp1.getData(),0,dp1.getLength());

int num2=Integer.parseInt(str1);

if(num1>num2)

{

str2=num1+"is greater\n";

}

else if(num2>num1)

{

str2=num2+"is greater\n";

}

else

{

str2=num1+"and"+num2+"both are same";

}

b2=str2.getBytes();

DatagramPacket dp2=new DatagramPacket(b2,b2.length,InetAddress.getLocalHost(),3000);

ds.send(dp2);

}

catch(Exception e)

{

e.printStackTrace();

}

Client Side code:

import java.io.*;

import java.net.*;

public class udpClientMax

{

public static void main(String args[])

{

try

{

DatagramSocket ds=new DatagramSocket(3000);

byte b[]=new byte[1024];

byte b1[]=new byte[1024];

byte b2[]=new byte[1024];

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.println("Enter the first number:");

String num1=br.readLine();

b=num1.getBytes();

DatagramPacket dp=new DatagramPacket(b,b.length,InetAddress.getLocalHost(),4000);

ds.send(dp);

System.out.println("Enter the second number:");

String num2=br.readLine();

b1=num2.getBytes();

DatagramPacket dp1=new DatagramPacket(b1,b1.length,InetAddress.getLocalHost(),4000);

ds.send(dp1);

DatagramPacket dp2=new DatagramPacket(b2,b2.length);

ds.receive(dp2);

String str=new String(dp2.getData(),0,dp2.getLength());

System.out.println(str);

}

catch(Exception e)

{

e.printStackTrace();

}

PRACTICAL NO:9

Aim: Write a java client/server udp code to check whether the entered number is prime or not.

Server Side Code:

import java.io.*;

import java.net.*;

public class udpServerPrime

{

public static void main(String args[])

{

try

{

DatagramSocket ds=new DatagramSocket(2000);

byte b[]=new byte[1024];

byte b1[]=new byte[1024];

String str1=new String();

DatagramPacket dp=new DatagramPacket(b,b.length);

ds.receive(dp);

String str=new String(dp.getData(),0,dp.getLength());

int num=Integer.parseInt(str);

if(num==1 | num==2 | num==3 )

{

str=num+"is a prime number";

b1=str.getBytes();

DatagramPacket dp2=new DatagramPacket(b1,b1.length,InetAddress.getLocalHost(),1000);

ds.send(dp2);

System.exit(0);

}

else

{

int num2=num/2;

for(int i=2;i<=num2;i++)

{

if(num%i==0)

{

str1=num+"is not a prime number";

b1=str1.getBytes();

DatagramPacket dp2=new DatagramPacket(b1,b1.length,InetAddress.getLocalHost(),1000);

ds.send(dp2);

System.exit(0);

}

str1=num+"is a prime number";

b1=str1.getBytes();

DatagramPacket dp2=new DatagramPacket(b1,b1.length,InetAddress.getLocalHost(),1000);

ds.send(dp2);

}

catch(Exception e)

{

e.printStackTrace();

}

Client Side Code:

import java.io.*;

import java.net.*;

public class udpClientPrime

{

public static void main(String args[])

{

try

{

DatagramSocket ds=new DatagramSocket(1000);

byte b[]=new byte[1024];

byte b1[]=new byte[1024];

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.println("Enter a number:");

String num1=br.readLine();

b=num1.getBytes();

DatagramPacket dp=new DatagramPacket(b,b.length,InetAddress.getLocalHost(),2000);

ds.send(dp);

DatagramPacket dp1=new DatagramPacket(b1,b1.length);

ds.receive(dp1);

String str=new String(dp1.getData(),0,dp1.getLength());

System.out.println(str);

}

catch(Exception e)

{

e.printStackTrace();

}

PRACTICAL NO:10

Aim: Write a java client/server udp code to change the case of sentence.

Server Side Code:

import java.io.*;

import java.net.*;

public class udpServerCase

{

public static void main(String args[])

{

try

{

DatagramSocket ds=new DatagramSocket(2000);

byte b[]=new byte[1024];

DatagramPacket dp=new DatagramPacket(b,b.length);

ds.receive(dp);

String str=new String(dp.getData(),0,dp.getLength());

String up=str.toUpperCase();

String low=str.toLowerCase();

byte b1[]=new byte[1024];

String str1="Upper case string is:"+up+"\nlower case string is:"+low;

b1=str1.getBytes();

DatagramPacket dp2=new DatagramPacket(b1,b1.length,InetAddress.getLocalHost(),1000);

ds.send(dp2);

}

catch(Exception e)

{

e.printStackTrace();

}

Client Side Code:

import java.io.*;

import java.net.*;

public class udpClientCase

{

public static void main(String args[])

{

try

{

DatagramSocket ds=new DatagramSocket(1000);

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.println("Enter a String:");

String str1=br.readLine();

byte b[]=new byte[1024];

b=str1.getBytes();

DatagramPacket dp=new DatagramPacket(b,b.length,InetAddress.getLocalHost(),2000);

ds.send(dp);

byte b1[]=new byte[1024];

DatagramPacket dp1=new DatagramPacket(b1,b1.length);

ds.receive(dp1);

String str=new String(dp1.getData(),0,dp1.getLength());

System.out.println(str);

}

catch(Exception e)

{

e.printStackTrace();

}

Itz me

Sunday 24 March 2013

3-10