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

public class window extends JFrame implements ActionListener {

    JPanel North;
    JPanel Center;
    JPanel South;
    JButton draw;
    JTextField text;

    int[][] board;

    window(){
        this.setSize(600, 600);
        this.setTitle("Clicking and Stuff");
        this.setLayout(new BorderLayout());

        North = new JPanel();
        this.add(North, BorderLayout.NORTH);
        this.draw=new JButton("Draw");
        this.draw.addActionListener(this);
        North.add(draw);
        text= new JTextField("Nothing");
        North.add(text);

        Center = new JPanel();
        this.add(Center, BorderLayout.CENTER);
        Handler h = new Handler();
        Center.addMouseListener(h);
        Center.addMouseMotionListener(h);

        South = new JPanel();
        this.add(South, BorderLayout.SOUTH);

        this.setVisible(true);
        this.setResizable(false);

        board = new int[10][10];
        for (int i = 0; i<10; i++){
            for (int j = 0; j<10; j++){
                board[i][j] = (int)(Math.random()*100);
            }
        }

    }

    void draws (Graphics g, int x, int y){
        int z = (x/40);
        int f = (y/40);

        g.setColor(Color.RED);
        g.drawRect(z*40, f*40, 40,40);

    }

    void draw(Graphics g){
        for (int i = 0; i < 10; i++){
            for (int j = 0; j < 10; j++){
                g.drawRect(j*40+40, i*40+40, 40, 40);
                String s = Integer.toString(board[i][j]);
                g.drawString(s, j*40+60-(g.getFontMetrics().stringWidth(s)/2), i*40+65);
            }
        }
    }

    private class Handler implements MouseMotionListener, MouseListener{

        @Override
        public void mouseClicked(MouseEvent e) {
            Graphics g = Center.getGraphics();
            System.out.println(e.getX()+" "+e.getY());
            draws(g, e.getX(), e.getY());
        }

        @Override
        public void mousePressed(MouseEvent e) {

        }

        @Override
        public void mouseReleased(MouseEvent e) {

        }

        @Override
        public void mouseEntered(MouseEvent e) {

        }

        @Override
        public void mouseExited(MouseEvent e) {

        }

        @Override
        public void mouseDragged(MouseEvent e) {

        }

        @Override
        public void mouseMoved(MouseEvent e) {

        }
    }





    @Override
    public void actionPerformed(ActionEvent e) {
        Graphics g = Center.getGraphics();
        if (e.getSource() == draw){
            draw(g);
        }
    }

    public static void main (String args[]){
        window g = new window();
    }
}