Java problem (input and output stream)!! Could someone have a look at my codes? I'm able to save my game of life into a txt file but I'm not able to restore/load it from the txt. Am I missing something?

Only the file reading part. When I choose the txt file to restore nothing appeared on the game board. I need help with that

import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.event.*; import java.util.*; import java.io.*; //import java.io.Serializable;

public class runMain extends JFrame implements ActionListener, Runnable { // Label the number of generation private JLabel generationLabel; // Label the start/stop/reset buttons private JButton start; private JButton stop; private JButton restart; private JButton save; private JButton restore; private JFileChooser fileChooser; // The inital number of generation private int generation = 0; // Thread clas object private Thread t; private boolean flag = true; // Label the cells private MarkLabel[][] mark; // Declare state of the game private boolean gameLife = false; /** * Construct game of life with user interface */ public runMain(int ROW, int COL) { // Set up window super("Life - Controller"); setLocation(25, 25); setSize(450, 450); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // Creating the labels for cells on board game mark = new MarkLabel[ROW + 2][COL + 2]; for (int row = 0; row < ROW + 2; row++) { for (int col = 0; col < COL + 2; col++) { mark[row][col] = new MarkLabel(); } } // Set size of horizontal and vertical lines and set color for lines JPanel boardPanel = new JPanel(new GridLayout(ROW, COL, 1, 1)); // Set background color boardPanel.setBackground(Color.LIGHT_GRAY); // Adding each label to the board panel and add to each of them to its neigbors for (int row = 1; row < ROW + 1; row++) { for (int col = 1; col < COL + 1; col++) { boardPanel.add(mark[row][col]); mark[row][col].nextAdd(mark[row - 1][col]); mark[row][col].nextAdd(mark[row + 1][col]); mark[row][col].nextAdd(mark[row][col - 1]); mark[row][col].nextAdd(mark[row][col + 1]); mark[row][col].nextAdd(mark[row - 1][col - 1]); mark[row][col].nextAdd(mark[row - 1][col + 1]); mark[row][col].nextAdd(mark[row + 1][col - 1]); mark[row][col].nextAdd(mark[row + 1][col + 1]); } } // Adding to Panel add(boardPanel, BorderLayout.CENTER); // Arrange the stop/stop/reset buttons and generation on the board boardPanel = new JPanel(new GridLayout(3, 0)); boardPanel.setBackground(Color.green); JPanel buttonPanel = new JPanel(new GridLayout(1, 0)); // Label the start button, set color to green and take action from user start = new JButton("Start"); start.addActionListener(this); start.setBackground(Color.green); start.setFont(new Font("Calibri", Font.BOLD, 18)); buttonPanel.add(start); // Label the stop button, set color to green and take action from user stop = new JButton("Stop"); stop.addActionListener(this); stop.setBackground(Color.green); stop.setFont(new Font("Calibri", Font.BOLD, 18)); buttonPanel.add(stop); // Label the reset button, set color to green and take action from user restart = new JButton("Reset"); restart.addActionListener(this); restart.setBackground(Color.green); restart.setFont(new Font("Calibri", Font.BOLD, 18)); buttonPanel.add(restart); // Add button to the board boardPanel.add(buttonPanel); // Label the generation, set up Font, set up its location and add to the gameboard generationLabel = new JLabel("Generation: 0", JLabel.CENTER); generationLabel.setFont(new Font("Calibri", Font.BOLD, 20)); boardPanel.add(generationLabel); add(boardPanel, BorderLayout.SOUTH); boardPanel = new JPanel(new GridLayout(0, 2)); save = new JButton("Save State"); save.addActionListener(this); boardPanel.add(save); restore = new JButton("Restore State"); restore.addActionListener(this); boardPanel.add(restore); add(boardPanel, BorderLayout.NORTH); // Set window to be visible validate(); setVisible(true); // Instructions for player UIManager jPane1 = new UIManager(); jPane1.put("OptionPane.background", Color.green); jPane1.put("Panel.background", Color.yellow); JOptionPane.showMessageDialog(null, "Create some pattern by clicking on the board, then click start ", "How to play the game ?", JOptionPane.INFORMATION_MESSAGE); } /** * This method takes action from user to start/stop/reset * * @return Return the values everytime for start/stop/reset */ public void actionPerformed(ActionEvent e) { Object act = e.getSource(); // If start button is clicked, the game runs with the delay of 1000 milliseconds(1 second) if (act == start) { if (flag) { gameLife = true; t = new Thread(this); // Start thread(timer) t.start(); flag = false; } // Return the value return; } // If stop button is clicked, the game stop(set it to false) else if (act == stop) { try { // Stop the thread t.stop(); } catch (NullPointerException ae) { // Do nothing } gameLife = false; flag = true; // Return the value return; } // If reset button is clicked, reset everything else if (act == restart) { try { // Stop the thread t.stop(); } catch (NullPointerException ae) { // Do nothing } gameLife = false; flag = true; // Reset every cell for (int row = 1; row < mark.length - 1; row++) { for (int col = 1; col < mark[row].length - 1; col++) { mark[row][col].restart(); } } // Reset number of generation generation = 0; generationLabel.setText("Generation: " + generation); // Return the value return; } else if (act == save) { fileChooser = new JFileChooser(); int result = fileChooser.showOpenDialog(this); if (result == JFileChooser.APPROVE_OPTION) { File f = fileChooser.getSelectedFile(); try { FileOutputStream fout = new FileOutputStream(f); ObjectOutputStream out = new ObjectOutputStream(fout); out.writeObject(mark); out.flush(); } catch (Exception ex) { } } } else if (act == restore) { fileChooser = new JFileChooser(); int result = fileChooser.showOpenDialog(this); if (result == JFileChooser.APPROVE_OPTION) { File f = fileChooser.getSelectedFile(); try { FileInputStream fin = new FileInputStream(f); ObjectInputStream in = new ObjectInputStream(fin); mark = (MarkLabel[][]) in.readObject(); } catch (Exception ex) { } } //if the game is not running wait for next time if (!gameLife) { return; } } } /** * Method of thread class */ public void run() { try { while (true) { // Increment the number of generation by 1 and add it to gameboard generation++; generationLabel.setText("Generation: " + generation); // Checking and updating state of cells for (int row = 0; row < mark.length; row++) { for (int col = 0; col < mark[row].length; col++) { mark[row][col].checkState(); } } for (int row = 0; row < mark.length; row++) { for (int col = 0; col < mark[row].length; col++) { mark[row][col].updateState(); } } // Sleeping thread for 1 second Thread.sleep(1000); } } catch (InterruptedException e) { // Do nothing } } /** * This is the main method which runs the program * * @param args The command-line arguments */ public static void main(String[] args) { // 19*19 size gameboard new runMain(19, 19); } }

class MarkLabel extends JLabel implements MouseListener { // Declare the color for gameboard and clicked cells static final Color[] color = {Color.GRAY, Color.RED}; // Declare state of the game and number of neighbor cells private int state, newState, nCell; // Set up the array private MarkLabel[] neighborCell = new MarkLabel[8]; MarkLabel() { // State of the game DEAD state = newState = 0; // Show up color setOpaque(true); setBackground(color[0]); // To select new ALIVE cells addMouseListener(this); } // Adding neighbor cell void nextAdd(MarkLabel n) { neighborCell[nCell++] = n; } // Check cells whether it should stay ALIVE or DEAD void checkState() { int Alive = 0; for (int i = 0; i < nCell; i++) { Alive += neighborCell[i].state; } // If state is alive: if (state == 1) { // Cell with fewer 2 LIVE neighbor dies if (Alive < 2) { newState = 0; } // Cell with more than 3 neigbor dies if (Alive > 3) { newState = 0; } } // If DEAD cells with 3 LIVE neighbors will become ALIVE else if (Alive == 3) { newState = 1; } } // Update the state void updateState() { if (state != newState) { state = newState; setBackground(color[state]); } } // Call when the game is reseted void restart() { if (state == 1 || newState == 1) { state = newState = 0; setBackground(color[state]); } } /** * This method takes action from clicking mouse from the user */ // If mouse is click on a cell, it become ALIVE @Override public void mouseClicked(MouseEvent e) { state = newState = 1; setBackground(color[1]); } // If click on a ALIVE cell, hold and drag that cell, it will become DEAD @Override public void mouseReleased(MouseEvent e) { state = newState = 0; setBackground(color[0]); } // Do nothing for all of these below public void mousePressed(MouseEvent e) { } @Override public void mouseEntered(MouseEvent e) { } @Override public void mouseExited(MouseEvent e) { } }