监听器 得到的文件,怎么在主类转成输入流 谢谢
public class FileChooser extends JFrame{ File file = chooser.getSelectedFile();}
public class AAAAA { public static void main(String[] args) throws Exception { DocumentBuilderFactory domfac = DocumentBuilderFactory.newInstance(); DocumentBuilder builder = domfac.newDocumentBuilder(); new FileChooser().setVisible(true); InputStream is = new FileInputStream(); Document doc = builder.parse(is);}