Simple main program to test out RelLayout.
Invoke directly from Java interpreter.
new ColumnLayoutTest(ColumnLayout.X_AXIS, 0, 0).setVisible(true);
new ColumnLayoutTest(ColumnLayout.Y_AXIS, 0, 0).setVisible(true);
new ColumnLayoutTest(ColumnLayout.X_AXIS, 10, 10).setVisible(true);
new ColumnLayoutTest(ColumnLayout.Y_AXIS, 10, 10).setVisible(true);