在OS X上， FileView 比更好用的FileSystemView 。我正在使用以下内容来获取文件图标：

On OS X, a FileView works much better than a FileSystemView. I'm using the following to get icons for files:

final JFileChooser fc = new JFileChooser();
//return fc.getFileView().getIcon(f); // will throw a  null pointer
Icon result = fc.getUI().getFileView(fc).getIcon(f);