FULL PRODUCT VERSION :
openjdk version "1.8.0_91"
OpenJDK Runtime Environment (build 1.8.0_91-8u91-b14-0ubuntu4~16.04.1-b14)
OpenJDK 64-Bit Server VM (build 25.91-b14, mixed mode)

(Note : this issue also occurs with the Oracle JRE/JDK)

ADDITIONAL OS VERSION INFORMATION :
Linux matthieu-ubuntu 4.4.0-24-generic #43-Ubuntu SMP Wed Jun 8 19:27:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

A DESCRIPTION OF THE PROBLEM :
KeyStroke shortcuts that involve any of the following keys do not work. (tested with JMenuItem accelerators and JTextComponent's Keymap, both do not work)

* KeyEvent.VK_0
* KeyEvent.VK_1
* KeyEvent.VK_2
* KeyEvent.VK_3
* KeyEvent.VK_4
* KeyEvent.VK_5
* KeyEvent.VK_6
* KeyEvent.VK_7
* KeyEvent.VK_8
* KeyEvent.VK_9



STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1) Use a JMenuItem accelerator with one of the Virtual Keys that correspond to a number and create a JTextArea with an action bound to a KeyStroke that includes one of the Virtual Keys that correspond to a number that is added to the JTextArea's keymap.

2) Compile and run

3) For testing the JMenuItem : use the shortcut that was previously set.
For testing the JTextArea : click inside the JTextArea and use the shortcut.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
JMenuItem : the ActionListener(s) of the JMenuItem should be triggered once the shortcut is used.

JTextArea : The Action we set for the keymap of the JTextArea should be triggered when the shortcut is used and the JTextArea is focused.

ACTUAL -
Nothing happens

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.*;

public class MyExample extends JFrame {

    MyExample() {
        initGUI();
    }

    private void initGUI() {
        // Set up the window
        JPanel pane = (JPanel) getContentPane();
        pane.setLayout(new BorderLayout());

        JTextComponent component = new JTextArea();
        pane.add(component, BorderLayout.CENTER);
        Keymap keymap = component.getKeymap();
        keymap.addActionForKeyStroke(KeyStroke.getKeyStroke(KeyEvent.VK_1, InputEvent.CTRL_DOWN_MASK), new MyAction());

        JMenuBar menuBar = new JMenuBar();
        JMenu menu = new JMenu("Test menu");
        menuBar.add(menu);
        JMenuItem menuItem = new JMenuItem("Test menu item");
        menuItem.addActionListener(new MyAction());
        menuItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_1, InputEvent.CTRL_DOWN_MASK));
        menu.add(menuItem);
        
        this.setJMenuBar(menuBar);
        
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setSize(600,300);

    }

    public static void main(String[] args) {
        EventQueue.invokeLater(() -> {
            MyExample me = new MyExample();
            me.setVisible(true);
        });
    }

    class MyAction extends AbstractAction{

        @Override
        public void actionPerformed(ActionEvent e) {
            System.out.println("Action performed");
        }

    }
}
---------- END SOURCE ----------