java 如何获得 Caps Lock 状态并将其设置为开启（如果尚未开启）？
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How can I get the Caps Lock state, and set it to on, if it isn't already?
提问by Mike George
I would like a specific example on how to turn caps lock on ifit is off.
我想就如何打开大写锁定一个具体的例子，如果它是关闭的。
I know how to toggle the key, I have been using this:
我知道如何切换键，我一直在使用这个：
toolkit.setLockingKeyState(KeyEvent.VK_CAPS_LOCK, Boolean.TRUE);
That will change the state of the key whether it is on or off. But I want to make sure it is on at the beginning of the application.
这将改变键的状态，无论它是打开还是关闭。但我想确保它在应用程序开始时就打开了。
(The final goal is having the keyboard LEDs flash in certain sequences, which works better if I have a certain starting state.)
（最终目标是让键盘 LED 以特定顺序闪烁，如果我有特定的启动状态，效果会更好。）
回答by Michael Mrozek
You can use getLockingKeyStateto check if Caps Lock is currently set:
您可以使用getLockingKeyState检查当前是否设置了 Caps Lock：
boolean isOn = Toolkit.getDefaultToolkit().getLockingKeyState(KeyEvent.VK_CAPS_LOCK);
However, it's unnecessary -- setLockingKeyStatedoesn't toggle the state of the key, it sets it. If you pass it trueit will set the key state to on regardless of the original state:
但是，这是不必要的——setLockingKeyState不会切换键的状态，而是设置它。如果你通过它，true它会将关键状态设置为 on，而不管原始状态如何：
Toolkit.getDefaultToolkit().setLockingKeyState(KeyEvent.VK_CAPS_LOCK, true);
