It’s worth reading here about Oracle Tutorial – Enabling Keyboard Operation where it is explained in details along with sample.
Read more about on Oracle Tutorial – How to Use Key Bindings
Some example directly from the above tutorial:
//Setting the mnemonic when constructing a menu item:
menuItem = new JMenuItem("A text-only menu item",
KeyEvent.VK_H);
//Setting the mnemonic after creation time:
menuItem.setMnemonic(KeyEvent.VK_H);
//Setting the accelerator:
menuItem.setAccelerator(KeyStroke.getKeyStroke(
KeyEvent.VK_H, ActionEvent.ALT_MASK));
Read more here Oracle Tutorial – How to Use Buttons, Check Boxes, and Radio Buttons
Sample code: (Alt-H
would click the Middle button)
JButton b2 = new JButton("Middle button", middleButtonIcon);
b2.setMnemonic(KeyEvent.VK_H);