cannot find symbol ?????

//GUI CLIENT
 
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;
 
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
 
public class Client extends JFrame  {
 
	private static final long serialVersionUID = -3054541431624115776L;
 
	private Socket clientSocket;
 
	static MyBoard myBoard;
 
	public Container contentPane;
 
	ServerConnection newConn = new ServerConnection();
 
	public Client() throws UnknownHostException, IOException {
		setTitle("Labyrinth");
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		setVisible(true);      
 
		String hostname = "localhost";
		int portNumber = 4455;
 
		clientSocket = new Socket(hostname, portNumber);
 
		setSize(900,800); 
 
		myBoard = new MyBoard("Images/Blank.jpg",10,10,10,10, 60,60);
 
		myBoard.setNoOfTiles(10000); // Total number of tiles
 
		contentPane = getContentPane();
		contentPane.setLayout(new BorderLayout());
 
 
		JScrollPane jsp = new JScrollPane(myBoard);
		contentPane.add("Center", jsp);
 
		//Buttons
		JButton goUpButton = new JButton("Up");
		JButton goDownButton = new JButton("Down");
		JButton goLeftButton = new JButton("Left");
		JButton goRightButton = new JButton("Right");
 
		//ActionListener for buttons
		goUpButton.addActionListener(myBoard);
		goDownButton.addActionListener(myBoard);
		goLeftButton.addActionListener(myBoard);
		goRightButton.addActionListener(myBoard);
 
		contentPane.add("West",goLeftButton);
		contentPane.add("East",goRightButton);
		contentPane.add("North",goUpButton);
		contentPane.add("South", goDownButton);
 
		setVisible(true);
 
 
 
		int mapHeight = lookResponse.length;
 
		int idmap = 1;
 
		for(int a=0;a<mapHeight;a++)
		{
			for(int b=0;b<lookResponse[a].length;b++)
			{
				switch(lookResponse[a][b])
				{
					case  'X': myBoard.setTile(++idmap,b,a,"Images/questionmark.jpg")  ; break;
					case  '#': myBoard.setTile(++idmap,b,a,"Images/wall.jpg")  ; break;
					case  '.': myBoard.setTile(++idmap,b,a,"Images/floor.jpg")  ; break;
					case  'E': myBoard.setTile(++idmap,b,a,"Images/exit.jpg")  ; break;
					case  'G': myBoard.setTile(++idmap,b,a,"Images/gold.jpg")  ; break;
					case  'H': myBoard.setTile(++idmap,b,a,"Images/health.jpg"); break;
					case  'S': myBoard.setTile(++idmap,b,a,"Images/sword.jpg") ; break;
					case  'A': myBoard.setTile(++idmap,b,a,"Images/armour.jpg"); break;
					case  'L': myBoard.setTile(++idmap,b,a,"Images/lantern.jpg"); break;
					case  'P': myBoard.setTile(++idmap,b,a,"Images/player.jpg") ; break;
				}
				repaint();
			}
			repaint();
		}
		repaint();
 
		JMenuBar menuBar = new JMenuBar();
		setJMenuBar(menuBar);
 
		JMenu fileMenu = new JMenu("File");
		JMenu sendCommand = new JMenu("Command");
 
		menuBar.add(fileMenu);
		menuBar.add(sendCommand);
 
		JMenuItem openAction = new JMenuItem("Load new map");
		JMenuItem exitAction = new JMenuItem("Exit");
 
		JMenuItem sendcmd = new JMenuItem("Send command");
		setVisible(true);
 
 
		sendCommand.add(sendcmd);
		fileMenu.add(openAction);
		fileMenu.addSeparator();
		fileMenu.add(exitAction);
 
 
		openAction.setActionCommand("open");  
		openAction.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent event) {
 
			}});
 
		exitAction.setActionCommand("exit");   
		exitAction.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent event) {
				System.exit(0);
			}});
 
 
		sendcmd.setActionCommand("sendcmd");
		sendcmd.addActionListener(new DialogSender());
 
 
 
 
		setVisible(true);
 
	}//end of constructor
 
 
	public static void main(String[] args){
		try {
			new Client();
		} catch (UnknownHostException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
 
 
 
	class DialogSender implements ActionListener {
		public void actionPerformed(ActionEvent ae) {
			PrintWriter outToServer = null; 
			try {
				outToServer = new PrintWriter(new OutputStreamWriter(
						clientSocket.getOutputStream()));
 
				String sentence = JOptionPane.showInputDialog("Send a command:");
				if (sentence!=null && sentence.trim().length()>0){
					/* send the sentence to the server */
					outToServer.println(sentence);
				}
				outToServer.flush();
			} catch (IOException e) {
				e.printStackTrace();
			} finally {
				try {
				} catch (Exception e) { 
				}
			}
		}
	}
 
 
 
}
 
 
 
 
 
 
 
 
 
 
 
 
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
 
public class ServerConnection
{
 
	public PrintWriter outToServer;
 
	public BufferedReader inFromServer;
 
	private Socket clientSocket;
 
 
	public void connect(String host, int port) throws IOException
	{
		clientSocket = new Socket(host, port);
		inFromServer = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
		outToServer = new PrintWriter(new OutputStreamWriter(clientSocket.getOutputStream()));
 
	}
 
	public char[][] look() throws IOException	{
		sendCommand("LOOK");
		char[][] lookResponse = new char[5][];
		for (int i=0; i<5; i++) {
			String line =  inFromServer.readLine();
			System.out.println(line);
			lookResponse[i] = line.toCharArray();
 
		}
		return lookResponse;
	}
 
	private void sendCommand(String string) {
		System.out.println("Sending "+string);
		outToServer.println(string);
 
	}
 
}