美化难看的swing初始界面执行如下代码:UIManager.setLookAndFeel(new SubstanceLookAndFeel());JFrame.setDefaultLookAndFeelDecorated(true);JDialog.setDefaultLookAndFeelDecorated(true);SubstanceLookAndFeel.setCurrentTheme(new SubstanceTerracottaTheme());SubstanceLookAndFeel.setSkin(new EmeraldDuskSkin());Substance