server.java

Multiple client server using java and socket programing Distributed client server concepts are use

import java.net.*;
import java.util.regex.Pattern;
import java.io.*;
public class Server {
  public static void main(String[] ar) {
	int port = 6666; // just a random port. make sure you enter something between 1025 and 65535.
 
 	try {
    	ServerSocket ss = new ServerSocket(port); // create a server socket and bind it to the above port number.

    	System.out.println("Waiting for a client...");
    	
 		Socket socket = ss.accept(); // make the server listen for a connection, and let you know when it gets one.
 		System.out.println("Got a client :) ... Finally, someone saw me through all the cover!");
    	System.out.println();
    	int[][] share = new int[4][2];
    	share[0][0]= 0;
		share[1][0]= 1;
		share[2][0]= 2;
		share[3][0]= 3;
		
		share[0][1]= 0;
		share[1][1]= 0;
		share[2][1]= 0;
		share[3][1]= 0;
		
 		// Get the input and output streams of the socket, so that you can receive and send data to the client.
    	InputStream sin = socket.getInputStream();
    	OutputStream sout = socket.getOutputStream();
 		// Just converting them to different streams, so that string handling becomes easier.
    	BufferedReader keyboard = new BufferedReader(new InputStreamReader(System.in));

    	DataInputStream in = new DataInputStream(sin);
    	DataOutputStream out = new DataOutputStream(sout);

 		String line = null;
 		String outLine[];
 		int index;
 		int value;
 		int totalShare=0;
    	
    	while(true) {
 			line = in.readUTF(); // wait for the client to send a line of text.
 			Pattern p = Pattern.compile(" "); 
 			outLine = p.split(line);
 			
 			index = Integer.parseInt(outLine[0].trim());
 			value = Integer.parseInt(outLine[1].trim());
 			
 			for(int i=3,j=4;i<10;i=i+2,j++)
 			{
 				System.out.println("outLine"+j+" "+outLine[i]);
 				totalShare+=Integer.parseInt(outLine[i].trim());
 			}
 			System.out.println("totalShare    : "+totalShare);
 			
 			for(int i=0;i<4;i++)
 			{
 				if(share[i][0]==index)
 				{
 					share[i][1]=value;
// 					System.out.println("share[i][2]"+share[i][1]);
 				}
 				System.out.println(share[i][0]+"   "+share[i][1]);
 				totalShare += share[i][1];
 			}
 			
 			
 			
 			System.out.println("outLine "+outLine[1]);
 			System.out.println("totalShare : "+totalShare);
 			
 			System.out.println("Write your string .. :");
    		line = keyboard.readLine();
 			out.writeUTF(line); // send the same line back to the client.
    		out.flush(); // flush the stream to ensure that the data reaches the other end.

 			System.out.println("Waiting for the next line...");
    		System.out.println();
		}
	}catch(Exception x) {
		x.printStackTrace();
	}
  }
}