The white box at the bottom is a text field. You can change the text that is spinning. Also the label is mouse sensitive and if you click on it then it will change the rotation to the angle that your click at relative to the center.
If this isn't working, you can also launch using web start.
While working on another program I was having trouble with the JLabel class. It worked fine under regular conditions, but if the font used was derived from another font passed through an affine transformation then it miscomputed the bounds and the label would get removed from the layout.
This is a class that allows the rotation for the text to be set and sets the correct bounds.
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