类“不是抽象的，并且不覆盖抽象方法”。错误 [英] Class "is not abstract and does not override abstract method" error

问题描述

我正在 https://youtu.be/64V8CC7nSok 上学习Java教程。我已经从视频中复制了代码100％，但仍然出现此错误：

I am following a Java tutorial at https://youtu.be/64V8CC7nSok. I have copied the code 100% from the video, but still I get this error:

Board is not abstract and does not override abstract method actionPerformed(ActionEvent) in ActionListener

这是错误为 Board.java 的文件，足以重现该问题：

Here is the file with the error, Board.java, which is sufficient to reproduce the problem:

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

public class Board extends JPanel implements ActionListener{
    private Timer timer;

    public Board() {
        timer = new Timer(25, this);
        timer.start();
    }
    public void actionPeformed(ActionEvent e) {
        repaint();
    }
    public void paint(Graphics g) {
        super.paint(g);
        g.setColor(Color.red);
        g.fillRect(45, 60, 32, 32);
    }
}

是与编码无关的问题吗？但是软件设置或版本是？

Is it a problem that is not related to the coding but the software settings or version?

推荐答案

您拼错了actionPerformed！

You misspelled actionPerformed!

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