Clientside selective repeat

import java.lang.System;
import java.net.*;
import java.io.*;
import java.util.Random;

public class clients {
    static Socket connection;

    public static void main(String a[]) throws SocketException {
        try {
            int v[] = new int[10];
            int n = 0;
            Random rands = new Random();
            int rand = 0;

            InetAddress addr = InetAddress.getByName("Localhost");
            System.out.println(addr);
            connection = new Socket(addr, 8011);
            DataOutputStream out = new DataOutputStream(
                    connection.getOutputStream());
            DataInputStream in = new DataInputStream(
                    connection.getInputStream());
            int p = in.read();
            System.out.println("No of frame is:" + p);

            for (int i = 0; i < p; i++) {
                v[i] = in.read();
                System.out.println(v[i]);
            }
            rand = rands.nextInt(p);//FRAME NO. IS RANDOMLY GENERATED
            v[rand] = -1;
            for (int i = 0; i < p; i++){
                    System.out.println("Received frame is: " + v[i]);

            }
            for (int i = 0; i < p; i++)
                if (v[i] == -1) {
                    System.out.println("Request to retransmit from packet no "
                            + (i+1) + " again!!");
                    n = i;
                    out.write(n);
                    out.flush();
                }
            System.out.println();
                v[n] = in.read();
                System.out.println("Received frame is: " + v[n]);
            System.out.println("quiting");
        }
        catch (Exception e) {
            System.out.println(e);
        }

    }
}