JAVA FILE or I/O学习 - Desktop本地程序学习

 public class DesktopKnow
 {
     public void know()
     {
         try
         {
             Desktop.getDesktop().open(new File("C:\\Program Files"));
         } catch (IOException e1)
         {
             JOptionPane.showMessageDialog(null, "抱歉，您的电脑中还没有安装打开该文件的程序！", "打开文件 - 提示", JOptionPane.WARNING_MESSAGE);
         }
     }
     public static void main(String[] args)
     {
         DesktopKnow desktopKnow = new DesktopKnow();
         desktopKnow.know();
     }
 }