我有一个JTextFields的网格为我的数独gui但我很困惑如何放置例如左上方框中的3，在该框的左上角所以它看起来像这样
并且该号码对用户不可编辑？
这是我设置细胞的课程：
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();
}
}
}
}
这里是将3x3单元格设置为3x3网格的类
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 submit = new JButton();
MyTimer timer = new MyTimer();
startTime = new JButton("Start Timer");
stop = new JButton("Stop Timer");
final JLabel timerLabel = new JLabel(" ...Waiting... ");
submit = new JButton("Done");
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();
}
}
}