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Editorial Team
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Asked: 2026-05-21T20:14:14+00:00

Is there any way to turn on/off Num, Caps and Scroll Lock lights? It’s

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Is there any way to turn on/off Num, Caps and Scroll Lock lights? It’s just for fun and my idea is to do something like disco.

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  1. Editorial Team

    Try

    Toolkit.getDefaultToolkit().setLockingKeyState(KeyEvent.VK_CAPS_LOCK, true);

    to set Caps lock On. 

    Toolkit.getDefaultToolkit().setLockingKeyState(KeyEvent.VK_CAPS_LOCK, false);

    to set Caps lock Off.

    and

    boolean isCapsLockOn = Toolkit.getDefaultToolkit().getLockingKeyState(KeyEvent.VK_CAPS_LOCK);

    to get current status.

    use KeyEvent.VK_NUM_LOCK for num lock.

    I have tested this on Windows. I’m not sure about other OSs but I would think it would work.

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