import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;

import javax.swing.*;

public class JMaze extends JFrame
implements WindowListener
{

private JMazeSolver solver;
private JPanel contentPane;

public JMaze(JMazeSolver mazeSolver)
{
super("Zombie Run");
solver = mazeSolver;

setResizable(false);
setDefaultCloseOperation(2);
addWindowListener(this);

contentPane = new JPanel();
contentPane.setBackground(Color.WHITE);
contentPane.setLayout(new BorderLayout());

contentPane.add(mazeSolver,BorderLayout.NORTH);

final JButton jbutton = new JButton("Feed the Zombie");
contentPane.add(jbutton,BorderLayout.SOUTH);
setContentPane(contentPane);

jbutton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
solver.solve();
contentPane.revalidate();
contentPane.repaint();
jbutton.setEnabled(false);
}
});

pack();
setVisible(true);
}

public void windowActivated(WindowEvent windowevent)
{
}

public void windowClosing(WindowEvent windowevent)
{
}

public void windowDeactivated(WindowEvent windowevent)
{
}

public void windowDeiconified(WindowEvent windowevent)
{
}

public void windowIconified(WindowEvent windowevent)
{
}

public void windowOpened(WindowEvent windowevent)
{
}

public void windowClosed(WindowEvent windowevent)
{
System.exit(0);
}

public static void main(String[] args)
{
new JMaze(new JMazeSolver(10));
}

}

import java.awt.*;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.*;


public class JMazeSolver extends JPanel{

private MazeSolver mazeSolver;
private String[][] maze;
private JLabel[][] mazeLabels;

public JMazeSolver(int mazeSize)
{
setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));
setLayout(new GridLayout(mazeSize, mazeSize));
maze = new String[mazeSize][mazeSize];
mazeLabels = new JLabel[mazeSize][mazeSize];

initializeMaze();
mazeSolver = new RecursiveMazeSolver();
}

public void solve()
{
mazeSolver.solve(maze);
}

private void initializeMaze()
{
for(int i = 0; i < maze.length; i++)
for(int j = 0; j < maze[i].length; j++)
{
final int row = i;
final int col = j;

mazeLabels[row][col] = new JLabel();
maze[row][col] = "";
final JLabel cellLabel = mazeLabels[row][col];


cellLabel.setOpaque(true);
Dimension size = new Dimension(30,20);
cellLabel.setSize(size);
cellLabel.setMaximumSize(size);
cellLabel.setPreferredSize(size);
cellLabel.setMaximumSize(size);

cellLabel.setBorder(BorderFactory.createLineBorder(Color.blue));
cellLabel.setBackground(Color.black);
add(cellLabel);

cellLabel.addMouseListener(new MouseListener() {

@Override
public void mouseClicked(MouseEvent arg0) {
// the color changes when clicked
if(maze[row][col].equals(""))
{
cellLabel.setBackground(Color.CYAN);
cellLabel.setText("");
maze[row][col] = "W";

}
else if(maze[row][col].equals("W"))
{
cellLabel.setBackground(Color.BLACK);
cellLabel.setText("Start");
maze[row][col] = "S";
}
else if(maze[row][col].equals("S"))
{
cellLabel.setBackground(Color.BLACK);
cellLabel.setText("End");
maze[row][col] = "F";
}
else if(maze[row][col].equals("F"))
{
cellLabel.setBackground(Color.BLACK);
cellLabel.setText("");
maze[row][col] = "";
}

}

@Override
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub

}

@Override
public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub

}

@Override
public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub

}

@Override
public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub

}
});
}
}

public void paintComponent(Graphics g)
{
super.paintComponent(g);

for(int i = 0; i < maze.length; i++)
{
for(int j = 0; j < maze[i].length; j++)
{

mazeLabels[i][j].setText("");

if(maze[i][j].equals(""))
{
mazeLabels[i][j].setBackground(Color.BLACK);
}
else if (maze[i][j].equals("X"))
{
mazeLabels[i][j].setBackground(Color.RED);
}
else if( maze[i][j].equals("D"))
{
mazeLabels[i][j].setBackground(Color.YELLOW);
}
else if(maze[i][j].equals("W"))
{
mazeLabels[i][j].setBackground(Color.CYAN);
}
else if(maze[i][j].equals("S"))
{
mazeLabels[i][j].setBackground(Color.BLACK);
mazeLabels[i][j].setText("Start");
}
else if(maze[i][j].equals("F"))
{
mazeLabels[i][j].setBackground(Color.BLACK);
mazeLabels[i][j].setText("End");
}

}
}
}
}