FULL PRODUCT VERSION :
java version "1.8.0_77"
Java(TM) SE Runtime Environment (build 1.8.0_77-b03)
Java HotSpot(TM) 64-Bit Server VM (build 25.77-b03, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 10.0.10586]

A DESCRIPTION OF THE PROBLEM :
I want to let the java.awt.Robot press and release a earlier typed key (like playing a keyboard record). But this is not possible if the Keyboard Layout is NOT the International (like in my case its a german layout), with umlauts (ü,ö,ä). Because the given KeyCode through the KeyEvent while pressing an umlaut, throws an IllegalArgumentException.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Switch the Keyboard Layout to a non-international Layout. Record the given KeyCode by typing an umlaut. And let the Robot press/release this recorded KeyCode.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
I expected it will press the key on my System, which i typed before.
ACTUAL -
I got an Exception. (See: Error Message)

ERROR MESSAGES/STACK TRACES THAT OCCUR :
java.lang.IllegalArgumentException: Invalid key code
at sun.awt.windows.WRobotPeer.keyPress(Native Method)
at java.awt.Robot.keyPress(Robot.java:354)
at me.catching.KeyListener.nativeKeyPressed(KeyListener.java:130)
at org.jnativehook.GlobalScreen$EventDispatchTask.processKeyEvent(Unknown Source)
at org.jnativehook.GlobalScreen$EventDispatchTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

REPRODUCIBILITY :
This bug can be reproduced always.

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

public class KeyEventDemo implements KeyListener {
    
static JFrame frame = new JFrame("KeyEventDemo");

public static void main(String[] args) {
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(500, 500);
JTextField typingArea = new JTextField(20);
        typingArea.addKeyListener(new KeyEventDemo());
        frame.add(typingArea);
        frame.pack();
frame.setVisible(true);

}

    /** Handle the key typed event from the text field. */
    public void keyTyped(KeyEvent e) {
    }
    
    /** Handle the key pressed event from the text field. */
    public void keyPressed(KeyEvent e) {
        System.out.println("KeyCode: " + e.getKeyCode());
        System.out.println("ExtendedKeyCode: " + e.getExtendedKeyCode());
        
        try {
Robot robot = new Robot();

robot.delay(2000); //Short Wait. Because its better to click out of this Window to have no while
robot.keyPress(e.getExtendedKeyCode());
robot.keyRelease(e.getExtendedKeyCode());
robot.keyPress(e.getKeyCode());//Nothing of these versions work
robot.keyRelease(e.getKeyCode());

} catch (AWTException e1) {
e1.printStackTrace();
}
        
    }
    
    /** Handle the key released event from the text field. */
    public void keyReleased(KeyEvent e) {
    }
    
}
---------- END SOURCE ----------