Thread: Help With Sudoku GUI

So here is what i have so far for my sudoku game. Now my grid only displays textboxes where a user can input numbers but nothing will happen yet. I want to know how to make it so that the user can only input one character and only numbers. i would also like to know how to make some textboxes jdialogs displaying uneditable numbers that im taking from a sudoku website for the puzzle. Any help would be appreciated. Thanks.


Main Class

import javax.swing.JOptionPane; 
 
public class Game{ 
 
    public static void main(String[] args) { 
 
        JOptionPane.showMessageDialog(null, "Hello. Welcome to a game of Sudoku by Ezra Zike."); 
 
        Level select = new Level();  
 
    }    
}

Difficulty Select Class

import java.awt.FlowLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
 
public class Level extends JFrame {
 
    private JLabel tag1;
    private JButton butt1;
    private JButton butt2;
    private JButton butt3;
    private JButton butt4;
 
    public Level(){
 
        super("Difficulty");
        setLayout(new FlowLayout());
        setSize(250,130);
        setVisible(true);
        setLocationRelativeTo(null);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 
        tag1 = new JLabel("Please Select Your Difficulty.");
        add(tag1);
 
        butt1 = new JButton("Easy.");
        butt1.setToolTipText("For players new to Sudoku.");
        add(butt1);
 
        butt2 = new JButton("Medium.");
        butt2.setToolTipText("Your abilites will be tested.");
        add(butt2);
 
        butt3 = new JButton("Hard.");
        butt3.setToolTipText("Your skills will be strained.");
        add(butt3);
 
        butt4 = new JButton("Evil!");
        butt4.setToolTipText("You will not survive.");
        add(butt4);
 
        thehandler handler = new thehandler();
        butt1.addActionListener(handler);
        butt2.addActionListener(handler);
        butt3.addActionListener(handler);
        butt4.addActionListener(handler);
 
    }
 
    private class thehandler implements ActionListener{
 
        public void actionPerformed(ActionEvent event){
 
            String string = "";
 
            if(event.getSource()==butt1){
                dispose();
                string = "Have fun!";
                SudokuPanel Squares = new SudokuPanel();
                }
            else if(event.getSource()==butt2){
                dispose();
                string = "Good luck!";
                SudokuPanel Squares = new SudokuPanel();
                }
            else if(event.getSource()==butt3){
                dispose();
                string = "Try to keep your head from exploding...";
                SudokuPanel Squares = new SudokuPanel();
                }
            else if(event.getSource()==butt4){
                dispose();
                string = "Please refrain from smashing any keyboards.";
                SudokuPanel Squares = new SudokuPanel();
                }
 
            JOptionPane.showMessageDialog(null, string);
        }
 
    }
 
}

Sudoku Panel Class

import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
 
public class SudokuPanel extends JFrame {
 
    public final int SQUARE_COUNT = 9;
    public Squares [] squares = new Squares[SQUARE_COUNT];
 
    public SudokuPanel(){
 
        super("Sudoku");
        setSize(600,600);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 
 
        JPanel panel = new JPanel(new GridLayout(3,3));
        for(int i=0; i<SQUARE_COUNT; i++){
            squares[i] = new Squares();
            panel.add(squares[i]);
        }
 
        JPanel panel2 = new JPanel();
        JButton startTime = new JButton();
        JButton stop = new JButton();
        JButton resetTimer = new JButton();
        MyTimer timer = new MyTimer();
 
        startTime = new JButton("Start Timer");
        stop = new JButton("Stop Timer");
        final JLabel timerLabel = new JLabel("   ...Waiting...   ");
        resetTimer = new JButton("Reset");
 
        JMenuBar menuBar = new JMenuBar();
        setJMenuBar(menuBar);
 
        JMenu menu = new JMenu("Menu");
        menuBar.add(menu);
 
        JMenuItem newDifficulty = new JMenuItem("Select New Difficulty");
        menu.add(newDifficulty);
 
        JMenuItem reset = new JMenuItem("Reset Puzzle");
        menu.add(reset);
 
        JMenuItem exit = new JMenuItem("Exit");
        menu.add(exit);
 
        exitaction e = new exitaction();
        newDifficultyaction d = new newDifficultyaction();
        resetaction f = new resetaction();
 
        reset.addActionListener(f);
        exit.addActionListener(e);
        newDifficulty.addActionListener(d);
 
        panel2.add(timer);
 
        add(panel, BorderLayout.CENTER);
        add(panel2, BorderLayout.PAGE_END);
 
        setVisible(true);
        setLocationRelativeTo(null);
 
    }
 
    public class exitaction implements ActionListener{
        public void actionPerformed (ActionEvent e){
            System.exit(0);
        }
    }
 
    public class newDifficultyaction implements ActionListener{
        public void actionPerformed (ActionEvent e){
            dispose();
            Level select = new Level(); 
        }
    }
 
    public class resetaction implements ActionListener{
        public void actionPerformed (ActionEvent e){
            dispose();
            SudokuPanel Squares = new SudokuPanel();
        }
    }
 
}

Squares/Cells class

import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;
 
 
public class Squares extends JPanel {
 
    public final int CELL_COUNT = 9;
    public Cell [] cells = new Cell[CELL_COUNT];
 
    public Squares(){
        this.setLayout(new GridLayout(3,3));
        this.setBorder(new LineBorder(Color.BLACK,2));
        for(int i =0; i<CELL_COUNT; i++){
            cells[i] = new Cell();
            this.add(cells[i]);
        }
    }
 
    public class Cell extends JTextField{
 
        private int number;
        public Cell(){
 
        }
         public void setNumber(int number){
             this.number = number;
             this.setText("1");
         }
        public int getNumber(){
 
            return number;
        }
 
    }
 
}

Timer Class

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
 
public class MyTimer extends Panel {
 
 
    private JLabel timeDisplay;
    private JButton resetButton;
    private JButton startButton;
    private JButton stopButton;
    Timer timer;
 
    public MyTimer(){
 
 
        startButton = new JButton("Start Timer");
        stopButton = new JButton("Stop Timer");
        timeDisplay = new JLabel("...Waiting...");
 
 
 
        this.add(startButton);
        this.add(stopButton);
        this.add(timeDisplay);
 
        event e = new event();
        startButton.addActionListener(e);
 
        event1 c = new event1();
        stopButton.addActionListener(c);
 
 
 
    }

Please edit your post and wrap your code with code tags:
[code=java]
YOUR CODE HERE
[/code]
to get highlighting and preserve formatting.

some textboxes jdialogs displaying uneditable numbers

text fields can be made uneditable by calling one of its methods.

Say i wanted to put a 2 in the upper left box in the upper left corner of that box like this http://tinypic.com/r/vrzpfq/8, how would i go about it. btw the numbers in the pictures are the ones i plan on using to fill my grid.


Code for individual 3x3 cells

import java.awt.*;
 
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.PlainDocument;
 
 
public class Squares extends JPanel {
 
	public final int CELL_COUNT = 9;
	public Cell [] cells = new Cell[CELL_COUNT];
 
	public Squares(){
		this.setLayout(new GridLayout(3,3));
		this.setBorder(new LineBorder(Color.BLACK,2));
		for(int i = 0; i<CELL_COUNT; i++){
			cells[i] = new Cell();
			cells[i].setDocument(new NumericalDocument());
			this.add(cells[i]);
		}
	}
 
	public class Cell extends JTextField{
 
		private int number;
		public Cell(){
 
		}
		public void setNumber(int number){
			this.number = number;
			this.setText("5");
		}
		public int getNumber(){
 
			return number;
		}
 
	}
 
	public static class NumericalDocument extends PlainDocument{
		String numbers = "0123456789";
		public void insertString(int offs, String str, AttributeSet a) throws BadLocationException {
			if (getLength() == 0 && str.length() == 1 && numbers.contains(str)) {
				super.insertString(offs, str, a);
			}
			else {
				Toolkit.getDefaultToolkit().beep();
			}
		}
	}
}

Code for putting the 3x3 squares into a 3x3 grid making a 9x9 grid jtextfields

import java.awt.GridLayout;
 
import javax.swing.JPanel;
 
 
public class Grid extends JPanel{
 
	public final int SQUARE_COUNT = 9;
	public Squares [] squares = new Squares[SQUARE_COUNT];
 
	public Grid(){
		for(int i=0; i<SQUARE_COUNT; i++){
			squares[i] = new Squares();
			this.add(squares[i]);
		}
	}
}

--- Update ---

Please anyone? This is one of the last few things i need to be done, its had me stuck for a while and i only have one day left to turn this in.