final UILabel ballsLabel = new UILabel("# of balls:");
ballsLabel.setLayoutData(new AnchorLayoutData(Alignment.TOP_LEFT, collide, Alignment.BOTTOM_LEFT, 0, -15));
_configFrame.getContentPanel().add(ballsLabel);
final ButtonGroup ballsGroup = new ButtonGroup();
final UIRadioButton balls16 = new UIRadioButton("16");
balls16.setLayoutData(new AnchorLayoutData(Alignment.LEFT, ballsLabel, Alignment.RIGHT, 5, 0));
balls16.setSelectable(true);
balls16.setSelected(true);