Accelerator on JMenuItem doesn't work if the JMenu is not open (but only a few)

Question

My problem is about accelerators on JMenuItem, the accelerator doesn't work if the JMenu is not opened, but only for some of them. For one it is working (CTRL + G), but for another one it is not working (CTRL + H). I have no idea why it doesn't work. (it's working if the JMenu is open I remind it)

Maybe it's about another shortcut already set up on that combination ?

remplacer.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_H, java.awt.event.InputEvent.CTRL_DOWN_MASK));
    remplacer.setText("Remplacer");
    remplacer.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            remplacerActionPerformed(evt);
        }
    });
    edition_menu.add(remplacer);

    atteindre.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_G, java.awt.event.InputEvent.CTRL_DOWN_MASK));
    atteindre.setText("Atteindre");
    atteindre.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            atteindreActionPerformed(evt);
        }
    });
    edition_menu.add(atteindre);

Here are two JMenuItem contained in a JMenu, one is working anyway, but the other is working only if I open the JMenu before. Thank's for your help.

Answer 1

Seems to work fine for me, consider providing a minimal reproducible example which demonstrates your issue

import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.KeyStroke;

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

    public Main() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                JMenuItem replaceMI = new JMenuItem("Replace");
                replaceMI.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_H, KeyEvent.CTRL_DOWN_MASK));
                replaceMI.addActionListener(new ActionListener() {
                    @Override
                    public void actionPerformed(ActionEvent e) {
                        System.out.println("Do replace");
                    }
                });
                JMenuItem findMI = new JMenuItem("Find");
                findMI.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_G, KeyEvent.CTRL_DOWN_MASK));
                findMI.addActionListener(new ActionListener() {
                    @Override
                    public void actionPerformed(ActionEvent e) {
                        System.out.println("Do find");
                    }
                });

                JMenu editMenu = new JMenu("Edit");
                editMenu.add(replaceMI);
                editMenu.add(findMI);

                JMenuBar menuBar = new JMenuBar();
                menuBar.add(editMenu);

                JFrame frame = new JFrame();
                frame.setJMenuBar(menuBar);
                frame.add(new TestPane());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

    public class TestPane extends JPanel {
        @Override
        public Dimension getPreferredSize() {
            return new Dimension(200, 200);
        }
    }
}