JFrame.setDefaultLookAndFeelDecorated(true); JDialog.setDefaultLookAndFeelDecorated(true); java.awt.EventQueue.invokeLater(new Runnable() { public void run() { try { UIManager .setLookAndFeel("org.jvnet.substance.SubstanceLookAndFeel"); } catch (Exception e) {e.printStackTrace();} } }); if (null != comm) { SwingUtilities.updateComponentTreeUI(comm); }// end if