导入配置jar包 substance.jar
然后在frame的主函数 加入如下代码

JFrame.setDefaultLookAndFeelDecorated(true);
   JDialog.setDefaultLookAndFeelDecorated(true);
   try {
   UIManager.setLookAndFeel(new org.jvnet.substance.skin.SubstanceModerateLookAndFeel()) ;
  } catch (UnsupportedLookAndFeelException e) {
   e.printStackTrace();
  }    FontUIResource f = new FontUIResource("", Font.PLAIN, 14);
  java.util.Enumeration keys = UIManager.getDefaults().keys();
  while (keys.hasMoreElements()) {
   Object key = keys.nextElement();
   Object value = UIManager.get(key);
   if (value instanceof javax.swing.plaf.FontUIResource){
    UIManager.put(key, f);
   }    
  }

 

然后即可以美化界面