How can I detect if caps lock is toggled in Swing?

Question

I'm trying to build a better username/password field for my workplace and would like to be able to complain when they have their caps lock on.

Is this possible? And if so I'd like to have it detected before the client types their first letter.

Is there a non-platform specific way to do this?

Answer 1

Try this, from java.awt.Toolkit, returns a boolean:

Toolkit.getDefaultToolkit().getLockingKeyState(KeyEvent.VK_CAPS_LOCK)