private void removeCTRLTabFromFocusTraversal() {
KeyStroke ctrlTab = KeyStroke.getKeyStroke("ctrl TAB");
Set<AWTKeyStroke> forwardKeys =
new HashSet<>(this.getFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS));
forwardKeys.remove(ctrlTab);
this.setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, forwardKeys);
}
private void removeCTRLSHIFTTabFromFocusTraversal() {
KeyStroke ctrlShiftTab = KeyStroke.getKeyStroke("ctrl shift TAB");
Set<AWTKeyStroke> backwardKeys =
new HashSet<>(this.getFocusTraversalKeys(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS));
backwardKeys.remove(ctrlShiftTab);
}