Finding class of the IP address

Client:

import java.io.*;

import java.net.*;

import java.util.*;

class Clientip

{

            public static void main(String args[])

            {

            try

            {

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

                        Socket clsct=new Socket("127.0.0.1",139);

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

                        DataOutputStream dout=new DataOutputStream(clsct.getOutputStream());

RPC and RMI operation in java

Client

import java.io.*;

import java.net.*;

import java.util.*;

class Clientrpc

{

            public static void main(String args[])

            {

            try

            {

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

                        Socket clsct=new Socket("127.0.0.1",139);

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

                        DataOutputStream dout=new DataOutputStream(clsct.getOutputStream());

Stop and Wait in Java

Client

import java.io.*;

import java.net.*;

import java.util.*;

class Clientstop

{              public static void main(String args[])

                {try{while(true)

                                {String str1=null;

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

                                Socket clsct=new Socket("127.0.0.1",139);

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

                                DataOutputStream dout=new DataOutputStream(clsct.getOutputStream());

Bitstuffing in java

Client

import java.io.*;

import java.net.*;

import java.util.*;

class Clientbs

{              public static void main(String args[])

                {try{       BufferedReader in=new BufferedReader(new InputStreamReader(System.in));

                                Socket clsct=new Socket("127.0.0.1",139);

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

                                DataOutputStream dout=new DataOutputStream(clsct.getOutputStream());

File operation between client and server

File

Client

import java.io.*;

import java.net.*;

import java.util.*;

class Clientfile

{              public static void main(String args[])

                {try{

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

                                Socket clsct=new Socket("127.0.0.1",139);

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

                                DataOutputStream dout=new DataOutputStream(clsct.getOutputStream());

                                System.out.println("Enter the file name:");

Program for Hamming code & CRC in Java

HAMMING CODE :

CLIENT

import java.io.*;

import java.net.*;

import java.util.*;

import java.math.*;

class Clienthamming

{          public static void main(String args[])

            {

            try      

            {         

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

                        Socket clsct=new Socket("127.0.0.1",139);

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

                        DataOutputStream dout=new DataOutputStream(clsct.getOutputStream());

                        int x,y,z;

                        System.out.println("Enter the no.of bits in data word:");

                        String strr=in.readLine();

                        x=Integer.parseInt(strr);

                        System.out.println("Enter the no.of redundant bits:");