数组中的对应元素

Question

我在想什么使用new 创建一个JLabel 对象，并将它放在数组中相应的元素中。 (grid[row][col]) 的意思。我正在创建井字游戏 program.I 我正在使用 for 循环来初始化网格。这是我的 for 循环：

package tic.tac.toe;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class TicTacToe extends JFrame implements ActionListener, MouseListener
{
 Container content = this.getContentPane();
 //Program Arrays
JLabel [][] grid = new JLabel[' '][' '];
char [][ ]game = new char [' '][' '];
// Graphical User-interface Fields
JButton restart = new JButton("Restart");
JPanel p = new JPanel();
JLabel status = new JLabel("Welcome to Tic-Tac-Toe");
//Primitive Fields
int numClicks = 0 ;
boolean isDone = false;
boolean isXTurn = true;

public TicTacToe()
{//GUI
    this.setVisible(true);
    this.setTitle("Tic-Tac-Toe");
    this.setSize(900,500);
    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    //SetLayout

    //Add Status Label
    content.add(status);
    status.setOpaque(true);
    status.setBackground(Color.yellow);
    status.setForeground(Color.blue);
    status.setFont(new Font("Helvetica", Font.BOLD, 12));
    //Initailize the Main Panel
    p.setLayout(new GridLayout(3,3));
    p.setBackground(Color.black);
    content.add(p, BorderLayout.CENTER);
    //Initialize the grid
    for(int row = 0; row<=3;)
    {
        for (int col = 0; col<=3;)
        {
           JLabel lbl = new JLabel();
           grid[row][col] = lbl;
           grid[row][col].addMouseListener(this);
           grid[row][col].setOpaque(true);
           grid[row][col].setBackground(Color.white);
           grid[row][col].setFont(new Font("Helvetica", Font.BOLD, 39));
           p.add(grid[row][col]);



        }
    }

}





@Override
public void actionPerformed(ActionEvent ae) 
{

}

@Override
public void mouseClicked(MouseEvent me)
{

}

@Override
public void mousePressed(MouseEvent me)
{

}

@Override
public void mouseReleased(MouseEvent me) 
{

}

@Override
public void mouseEntered(MouseEvent me) 
{

}

@Override
public void mouseExited(MouseEvent me) 
{

}


public static void main(String[] args) {
    TicTacToe tTT = new TicTacToe();
}

}

Answer 1

我会给你一些提示，否则对你没有帮助我会做你的功课:

Java 中的数组是这样定义的：Type[] varName = new Type[NumberOfOccurences]; 或更多维度 Type[][] varName = new Type[NumberOfOccurencesForDimension1][NumberOfOccurencesForDimension2];。
将一个table放入一维数组中需要通过myArray[rowIndex * colIndex + colIndex] = objectToPutIn;
将 table 放入二维数组中很简单：myArray[rowIndex][colIndex] = objectToPutIn;
Java 中的数组索引从 0 开始。因此一个元素的数组在索引 0 处。

数组中的对应元素

Corresponding element in arrays

java

swing

tic-tac-toe