java - 尝试对多个按钮使用 1 个 Action 监听器

Question

所以我正在尝试编写一个危险游戏，但问题是我只是尝试将我的按钮分配给 1 个 Action 监听器，以便所有按钮都可以独立运行，但可以从 1 个 Action 监听器工作。

我试了很多方法，还是没有效果! 封装 jep;

import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;

import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;

public class jep implements ActionListener{


   public  JButton[][] t = new JButton[6][6];

public static void main(String[] args) {
    new jep();
    }
static int n = 100;

public jep() {


    JFrame frame = new JFrame("Jeopardy");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);   
    frame.setSize(1920,1080);
    frame.setLayout(new GridLayout(6, 5));
    frame.setVisible(true);
    for (int r = 0; r < 6; r++) {
        for (int c = 0; c < 5; c++) {
            String vakue = String.valueOf(n);
            t[r][c] = new JButton(vakue);
            t[r][c].setBackground(Color.BLUE);
            t[r][c].setForeground(Color.YELLOW);
            t[r][c].addActionListener(this);
            frame.add(t[r][c]);
        }
        n = n +300;
    }

@Override
public void actionPerformed(ActionEvent arg0) {
    // TODO Auto-generated method stub

}

我正在尝试获取它，以便我可以仅使用 1 个操作监听器单击多个按钮，但我所能得到的只是一个网格

Answer 1

这是更正后的代码，按下按钮时会打印到控制台。请检查代码中的注释:

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

public class Jep implements ActionListener { // class name has to start with a capital letter

    int i = 6;
    int j = 5;

    public JButton[][] t = new JButton[i][j];

    public static void main(String[] args) {
        new Jep();
    }

    static int n = 100;

    public Jep() {
        JFrame frame = new JFrame("Jeopardy");

        JPanel[][] panelHolder = new JPanel[i][j]; // use panels to add you buttons, check this for details:
        // https://stackoverflow.com/questions/2510159/can-i-add-a-component-to-a-specific-grid-cell-when-a-gridlayout-is-used

        frame.setLayout(new GridLayout(i, j));
        frame.setVisible(true);

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(1920, 1080);


        frame.setVisible(true);
        for (int r = 0; r < 6; r++) {
            for (int c = 0; c < 5; c++) {
                String vakue = String.valueOf(n);
                t[r][c] = new JButton(vakue);
                t[r][c].setBackground(Color.BLUE);
                t[r][c].setForeground(Color.BLACK);
                t[r][c].addActionListener(this);

                panelHolder[r][c] = new JPanel();

                panelHolder[r][c].add(t[r][c]);

                frame.add(panelHolder[r][c]);

                n = n + 300;
            }
        }
    }

    @Override
    public void actionPerformed(ActionEvent arg0) {
        System.out.println("press, value = " + arg0.getActionCommand()); // here is a simple system out log statement
    }
}

输出(当您按下多个按钮时):

press, value = 100
press, value = 400
press, value = 700
press, value = 1000
press, value = 1300
press, value = 1600

应用程序窗口:

希望这会有所帮助。