Client Server Program using TCP/IP Socket (Seversocket)

Simple Client Server Program: 

Client Program:

client.java
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import java.io.*;
import java.net.*;
class client
{
public static void main(String args[]) throws Exception
{
        String sentence,modifiedSentence,inp;
        BufferedReader inFromUser = new BufferedReader(new

InputStreamReader(System.in));
Socket s=null;
BufferedReader b=null;
    try
{
s=new Socket(InetAddress.getLocalHost(),98);
  b=new BufferedReader(new InputStreamReader(s.getInputStream()));
  }
  catch(UnknownHostException u)
{
System.err.println("I don't know host");
System.exit(0);
}
while((inp=b.readLine())!="\n")
{
System.out.println(inp);
}
         DataOutputStream outToServer = new DataOutputStream(s.getOutputStream());
         BufferedReader inFromServer = new BufferedReader(new

InputStreamReader(s.getInputStream()));
         sentence = inFromUser.readLine();
         outToServer.writeBytes(sentence + '\n');
         modifiedSentence = inFromServer.readLine();
         System.out.println(modifiedSentence);
         s.close();
b.close();
}
}

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Server Program:

server.java
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import java.io.*;

import java.net.*;

class server

{

public static void main(String args[]) throws Exception

{

ServerSocket n1=null;

try 

{ 

n1=new ServerSocket(98); 

} 

catch(IOException e) 

{ 

System.err.println("Port 98 could not be found"); 

System.exit(1); 

} 

Socket c=null; 

try

{ 

c=n1.accept(); 

System.out.println("Connection from "+c); 

} 

catch(IOException e)

{ 

System.out.println("Accept failed"); 

System.exit(1);

  } 

PrintWriter out=new PrintWriter(c.getOutputStream(),true); 

BufferedReader in=new BufferedReader(new InputStreamReader(c.getInputStream()));

  String n;

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

System.out.println("Ready to type now"); 

while((n=sin.readLine())!="\n") 

{ 

out.println(n); 

} 

out.close(); 

c.close(); 

n1.close(); 

}

}

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