Action on button click, what's wrong?

Question

Java

Created Frame. Placed a Button on it. Now I want to output the text to the console by clicking on the button, but there is some kind of error. What is wrong? Eclipse environment.

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

public class Main {

  public static void main(String[] args) {
    // TODO Auto-generated method stub
    
   JFrame frame = new JFrame("name of frame");
   frame.setSize(500, 300);
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   frame.setLocationRelativeTo(null);
   frame.setLayout(new BorderLayout());
   
   JButton Button = new JButton("Button");
   frame.add(Button, BorderLayout.EAST);
   
   Button.addActionListener(new myButton());
   
   frame.setVisible(true);
  }
  
}

public class myButton implements ActionListener{
  
  @Override
  public void actionPerformed(ActionEvent event) {
    // TODO Auto-generated method stub
    System.out.println("Hello, World");
  }
}

Answer 1

It doesn't work because you wrote the word public for each class and it should only be once in one class file, subclasses can't use it, remove public from class myButton