client.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 Client {

	public static void main(String[] ar) {
		int serverPort = 6666; // make sure you give the port number on which
								// the server is listening.
		String address = "127.0.0.1"; // this is the IP address of the server
										// program's computer. // the address
										// given here means "the same computer
										// as the client".
		int[][] share = new int[4][2];
		share[0][0] = 4;
		share[1][0] = 5;
		share[2][0] = 6;
		share[3][0] = 7;

		share[0][1] = 0;
		share[1][1] = 0;
		share[2][1] = 0;
		share[3][1] = 0;

		try {
			InetAddress ipAddress = InetAddress.getByName(address); // create an
																	// object
																	// that
																	// represents
																	// the above
																	// IP
																	// address.

			Socket socket = new Socket(ipAddress, serverPort); // create a
																// socket with
																// the server's
																// IP address
																// and server's
																// port.

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

			// Create a stream to read from the keyboard.
			BufferedReader keyboard = new BufferedReader(new InputStreamReader(
					System.in));

			String line = null;
			String outLine[];
			int index;
			int value;
			int totalShare = 0;
			System.out.println("Type in something and press enter.");
			System.out.println();

			while (true) {
				totalShare = 0;
				line = keyboard.readLine(); // wait for the user to type in
											// something and press enter.

				System.out.println("Sending this line to the server...");
				for (int i = 0; i < 4; i++) {
					line += " " + share[i][0] + " " + share[i][1];
				}
				out.writeUTF(line); // send the above line to the server.
				out.flush(); // flush the stream to ensure that the data
								// reaches the other end.
				line = in.readUTF(); // wait for the server 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(" " + 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][0] + "   " + share[i][1]);
					totalShare += share[i][1];
				}
				System.out.println("totalShare : " + totalShare);
				System.out.println();
			}
		} catch (Exception x) {
			x.printStackTrace();
		}
	}
}