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private final int hGap; private final int vGap; public CategoryPanelLayout() { SupportedLookAndFeel lf = SupportedLookAndFeel.forClassName(UIManager.getLookAndFeel().getClass().getName()); if (lf == null) { lf = SupportedLookAndFeel.CROSS_PLATFORM; } switch (lf) { case NIMBUS: