Java Utililty Methods Swing Focus

void addDefaultFocus(Window window, final JComponent component)
add Default Focus

window.addWindowFocusListener(new WindowAdapter() {
 @Override
 public void windowGainedFocus(WindowEvent e) {
 component.requestFocusInWindow();
});

void adjustFocus(JComponent c)
Request focus on the given component if it doesn't already have it and isRequestFocusEnabled() returns true.

if (!c.hasFocus() && c.isRequestFocusEnabled()) {
 c.requestFocus();

void centreInFocusedWindow(Window window, int xOffset, int yOffset)
centre In Focused Window

Window focusedWindow = KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusedWindow();
centreInContainer(focusedWindow, window, xOffset, yOffset);

void checkComponentsFocusable(final Component _rootComponent)
Check the components.

if (_rootComponent.isFocusable()) {
 System.out.println(
 "Focusable: \t" + _rootComponent.getClass().getSimpleName() + _rootComponent.getSize());
if (_rootComponent instanceof JPanel) {
 for (Component x : ((JPanel) _rootComponent).getComponents()) {
 checkComponentsFocusable(x);
} else if (_rootComponent instanceof JFrame) {
 for (Component x : ((JFrame) _rootComponent).getContentPane().getComponents()) {
 checkComponentsFocusable(x);
} else if (_rootComponent instanceof Panel) {
 for (Component x : ((Panel) _rootComponent).getComponents()) {
 checkComponentsFocusable(x);
} else if (_rootComponent instanceof Window) {
 for (Component x : ((Window) _rootComponent).getComponents()) {
 checkComponentsFocusable(x);

void clearAWTFocus(Robot robot)
clear AWT Focus

if (null == robot) {
 robot = new Robot();
 robot.setAutoWaitForIdle(true);
javax.swing.SwingUtilities.invokeAndWait(new Runnable() {
 public void run() {
 System.err.println("******** clearAWTFocus.0");
 java.awt.KeyboardFocusManager.getCurrentKeyboardFocusManager().clearGlobalFocusOwner();
...

Component compositeRequestFocus(Component component)
composite Request Focus

if (component instanceof Container) {
 Container container = (Container) component;
 if (container.isFocusCycleRoot()) {
 FocusTraversalPolicy policy = container.getFocusTraversalPolicy();
 Component comp = policy.getDefaultComponent(container);
 if (comp != null) {
 comp.requestFocus();
 return comp;
...

boolean containerContainsFocus(Container cont)
containerContainsFocus, does the specified container contain the current focusOwner?

Component focusOwner = KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner();
Component permFocusOwner = KeyboardFocusManager.getCurrentKeyboardFocusManager().getPermanentFocusOwner();
boolean focusOwned;
focusOwned = ((focusOwner != null) && SwingUtilities.isDescendingFrom(focusOwner, cont));
if (!focusOwned) {
 focusOwned = ((permFocusOwner != null) && SwingUtilities.isDescendingFrom(permFocusOwner, cont));
return focusOwned;
...

boolean containerContainsFocus(Container cont)
container Contains Focus

Component focusOwner = KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner();
Component permFocusOwner = KeyboardFocusManager.getCurrentKeyboardFocusManager()
 .getPermanentFocusOwner();
boolean focusOwned = (focusOwner != null) && (SwingUtilities.isDescendingFrom(focusOwner, cont));
if (!focusOwned) {
 focusOwned = (permFocusOwner != null)
 && (SwingUtilities.isDescendingFrom(permFocusOwner, cont));
return focusOwned;

FocusAdapter createWizardFocusAdapter()
create Wizard Focus Adapter

return new FocusAdapter() {
 @Override
 public void focusGained(FocusEvent e) {
 if (e.getSource() instanceof JTextComponent) {
 JTextComponent tf = (JTextComponent) e.getSource();
 tf.setSelectionStart(0);
 tf.setSelectionEnd(tf.getText().length());
};

boolean focusComponent(Component comp)
Tries to focus the given component.

if (comp == null) {
 return false;
if (comp.isFocusable() && !(comp instanceof JScrollPane)) {
 comp.requestFocus();
 return true;
if (comp instanceof Container) {
...