Java 将带有ActionListener的JButton添加到JTabbedPane：ActionListener不工作

新海报在这里；如果我违反了任何规则/把事情搞砸了，只要告诉我，我就把帖子拿下来

我有一个主菜单JFrame，里面有一个JPanel（主菜单）。主菜单有一个按钮，用于将显示更改为JTabbedPane指令。这部分工作正常

当我试图在说明中添加按钮和新选项卡时，问题就出现了。尽管新的按钮和选项卡被添加到Instructions类中，但尽管该按钮有一个ActionListener，但该按钮实际上并没有做任何事情

下面是说明类（扩展JTabbedPane）和主菜单（扩展JFrame）以供参考

提前谢谢

正下方：MainMenu类 `

` 以下：课堂说明

    /**
 * @author Nathan 
 * @version 1.0 
 * @studio Small Snake Studios 
 * @purpose: This is a JPanel representing the instructions screen. It functions by using a picture 
 * the instructions screen as the way to display it on the JPanel. The driver class/main menu 
 * adds an exit button to the JPanel so I can implement an ActionListener that closes this
 * tab from there. Probably works better that way, too. Uses a CardLayout to go from one
 * instruction page to another, allowing for easy readability and preventing me from having
 * to cram a lot of info in one screen. The pages of the CardLayout are done via nested classes 
 * so I can implement paint and graphics in each of them. 
 * 
 * Things to do:
 * - Add actual pictures for the three instructions screen
 * - Run this code with everything else to ensure it works
 */

import java.awt.*;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;

import javax.swing.*;
import java.io.*;
import javax.imageio.ImageIO;   

public class Instructions extends JTabbedPane{
        class FirstScreen extends JPanel 
    {   
        /**
             * 
             */
        private static final long serialVersionUID = -2674891692847531892L;
        BufferedImage instructions; 
        public FirstScreen ()
        {
            importInfo ();
            repaint ();
        }
        public void importInfo (){
        try
        {
            instructions = ImageIO.read (new File ("Instructions1.png"));
        }
        catch (IOException e)
        {
        }
        }
        public void paint (Graphics g)
        {
            g.drawImage (instructions, 0, 0, null);
        }
    }
        class SecondScreen extends JPanel 
    {   
        private static final long serialVersionUID = -2840353661877108337L;
        BufferedImage instructions; 
        public SecondScreen ()
        {
            importInfo ();
            repaint ();
        }
        public void importInfo ()
        {
            try
            {
            instructions = ImageIO.read (new File ("Instructions2.png"));
            }
            catch (IOException e)
            {
            }
        }
        public void paint (Graphics g)
        {
            g.drawImage (instructions, 0, 0, null);
        }
    }
        class ThirdScreen extends JPanel
        {   
        /**
             * 
             */
        private static final long serialVersionUID = -394248748993045880L;
        BufferedImage instructions; 
        public ThirdScreen ()
        {
            importInfo ();
            repaint ();
        }
        public void importInfo ()
        {
            try
            {
                instructions = ImageIO.read (new File ("Instructions3.png"));
            }
            catch (IOException e)
            {
            }
        }      
        public void paint (Graphics g)
        {
            g.drawImage (instructions, 0, 0, null);
        }
        }
public Instructions ()
{
    super ();
    FirstScreen card1 = new FirstScreen ();
    SecondScreen card2 = new SecondScreen (); 
    ThirdScreen card3 = new ThirdScreen ();
    add ("Page 1", card1); 
    add ("Page 2", card2);
    add ("Page 3", card3);
}
}

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您所指的returnButton没有附加actionListener。那就加上它吧

JButton returnButton = new JButton ("Return to Menu");
returnButton.addActionListener(this);

---

你指的是哪个按钮？returnButton没有监听装置啊，我很笨。Idk我怎么忘了添加侦听器：/谢谢！没问题，经常发生：）

JButton returnButton = new JButton ("Return to Menu");
returnButton.addActionListener(this);