Java Utililty Methods JComponent Container

allignBottom(lead, target, -1, -1);

final Rectangle screen = getScreenRect();
final Rectangle frameSize = target.getBounds();
final int x = (screen.width - frameSize.width) / 2;
final int y = (screen.height - frameSize.height) / 2;
target.setLocation(x, y);

Dimension targetSize = target.getSize();
Point location = parent.getLocationOnScreen();
Dimension sourceSize = parent.getSize();
Point sourceCenter = new Point(location.x + sourceSize.width / 2, location.y + sourceSize.height / 2);
Point frameLocation = new Point(sourceCenter.x - targetSize.width / 2,
        sourceCenter.y - targetSize.height / 2);
target.setLocation(frameLocation);

int depth = _currentColumn;
int amount = _currentRow;
int maxDepth = _currentColumn;
if (_rootComponent.getWidth() <= 0 || _rootComponent.getHeight() <= 0) {
    System.err.println(_print + _rootComponent.getClass().getSimpleName() + _rootComponent.getSize());
} else {
    System.out.println(_print + _rootComponent.getClass().getSimpleName()
    );
...

while (component != null) {
    Container parent = component.getParent();
    if (parent == null) {
        return component instanceof RootPaneContainer ? ((RootPaneContainer) component).getRootPane()
                : null;
    component = parent;
return null;

while (component != null) {
    if (component instanceof JRootPane) {
        return (JRootPane) component;
    component = getParent(component);
return null;

if (c == null) {
    return null;
} else if (c instanceof RootPaneContainer) {
    return (RootPaneContainer) c;
} else {
    return findRootPaneContainer(c.getParent());

while (root != null) {
    if (root instanceof RootPaneContainer) {
        return (RootPaneContainer) root;
    } else if (root instanceof JPopupMenu && root.getParent() == null) {
        root = ((JPopupMenu) root).getInvoker();
    } else {
        root = root.getParent();
return null;

Component comp = source;
while ((comp != null) && !(comp instanceof RootPaneContainer)) {
    comp = comp.getParent();
if (comp instanceof RootPaneContainer) {
    return (RootPaneContainer) comp;
return null;
...

Dimension d = c.getSize();
Insets ins = c.getInsets();
int left = ins.left;
int width = d.width - ins.right - ins.left;
int top = ins.top;
int height = d.height - ins.bottom - ins.top;
Rectangle ret = new Rectangle(left, top, width, height);
return ret;
...