Java - contro lkeyboard 'lock key' state programmatically

Java Controlling the lock keys : Caps Lock, Scroll Lock, Num Lock 's state - programmatically
public class Lock_Key_Control_In_Java {
    public static void main(String[] args) {
        Toolkit tk = Toolkit.getDefaultToolkit();

        //enable disable key state Caps Lock, Scroll Lock, Num Lock keys
        tk.setLockingKeyState(KeyEvent.VK_NUM_LOCK, true);
        tk.setLockingKeyState(KeyEvent.VK_CAPS_LOCK, false);
        tk.setLockingKeyState(KeyEvent.VK_SCROLL_LOCK, false);
The lock keys LED in the keyboard should be  turned ON or OFF ?

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