ServerMultiClient Class

//This is each seperate connection
import java.io.BufferedWriter;
import java.io.EOFException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.Socket;
import java.net.SocketException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;


public class ServerMultiClient extends Thread{

    private Socket socket = null;
    private ObjectOutputStream oos = null; //For SENDING data to client
    ObjectInputStream ois = null; //Getting info FROM client
    int serverID = -1; //ID assigned by the server Note: **If -1 is displayed in the Server Admin window, there is a problem
    Object[] fromClient; //Holds data from the Client. A 2-dim array. [0] is a String tag, to identify what it is. [1] Is the data to process
    private static String savedDataFileName = null; //The file name for the output file which holds the selection data from the user
    private static String savedDataFileNameMouse = null; //The file name for the output file which holds the mouse data from the user
    private static String ext = ".txt";

    public ServerMultiClient(Socket socket, int serverID) {
        super();
        this.socket = socket;
        this.serverID = serverID;
    }

    public void run() {
        //For SENDING data to client
        try{
            oos = new ObjectOutputStream(socket.getOutputStream());
        }
        catch(IOException e){
            e.printStackTrace();
        }

        //Getting info FROM client
        try {
            ois = new ObjectInputStream(socket.getInputStream());
        } catch (IOException e) {
            e.printStackTrace();
        }



        //A constant loop that listens for data from the client
        while(true){
            try{
                if((fromClient = (Object[]) ois.readObject()) != null){
                    //Determine what data this is
                    String tag = (String)fromClient[0]; //Getting the tag
                    System.out.println("tag from client: " + tag);
                    String dataStr = (String)fromClient[1];
                    System.out.println("Data right from client: " + dataStr);
                    if(tag.equals("ID")){
                        System.out.println("Client connected");
                        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH-mm-ss");
                        Date date = new Date();
                        savedDataFileName = "Server Data - Selections - " + (String)fromClient[1] + " - " + dateFormat.format(date); //The new outputfile name
                        writeSavedFile("Server Data - Selections - " + (String)fromClient[1] + " - " + dateFormat.format(date),0);

                        //Now write the mouse coor file
                        savedDataFileNameMouse = "Server Data - Mouse Coor - " + (String)fromClient[1]; //The default naming for the outputfile
                        //The file will be saved with the date and time
                        savedDataFileNameMouse = "Server Data - Mouse Coor - " + (String)fromClient[1] + " - " + dateFormat.format(date); //The new outputfile name
                        writeSavedFile(savedDataFileNameMouse, 1);
                    }
                    else if(tag.equals("Selections")){
                        System.out.println("Server Line: " + (String)fromClient[1]);
                        writeSavedFile((String)fromClient[1], 0);
                    }
                    else if(tag.equals("MouseCoor")){
                        System.out.println("Server Line: " + (String)fromClient[1]);
                        writeSavedFile((String)fromClient[1], 1);
                    }
                    else{
                        System.out.println("WARNING - UNKNOWN DATA RECEIVED");
                    }
                }
            }
            catch(EOFException e){
                e.printStackTrace();
            }
            catch(SocketException e){
                //Server.clientDisconnected(serverID);
                break;
            }
            catch(Exception e){
                e.printStackTrace();
            }

        }

        try{
            oos.flush();
            oos.close();
            ois.close();
            socket.close();
        }
        catch(Exception e){
            e.printStackTrace();
        }





    }

    //This method will send data to the Client
    public void sendData(Object[] data){
        try {
            oos.writeObject(data);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    //Write saved data: 0 = Selections  1 = Mouse Coor
    public static void writeSavedFile(String line, int typeOfData){
        if(typeOfData == 0){
            FileWriter fstream;
            try {
                System.out.println("Writing selection");
                fstream = new FileWriter(Server.getProgramPath() + savedDataFileName + ext, true); //Prepare to append (the "true") to the file
                BufferedWriter out = new BufferedWriter(fstream); //More prep
                out.write(line); //Write data
                out.newLine(); //Write a new line
                out.flush();
                out.close(); //Close the file
                fstream.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        else if(typeOfData == 1){
            FileWriter fstream;
            try {
                System.out.println("Writing mouse");
                fstream = new FileWriter(Server.getProgramPath() + savedDataFileNameMouse + ext , true); //Prepare to append (the "true") to the file
                BufferedWriter out = new BufferedWriter(fstream); //More prep
                out.write(line); //Write data
                out.newLine(); //Write a new line
                out.close(); //Close the file
                fstream.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

    }

}