假设系统的路径为：E:\Program Files\myworkspace\EngravedCode

（1）System.out.println(System.getProperty("user.dir"));//user.dir指定了当前的路径   

        输出：E:\Program Files\myworkspace\EngravedCode

（2）File directory = new File("");//设定为当前文件夹  
  
      try {
              System.out.println(directory.getCanonicalPath());

              System.out.println(directory.getAbsolutePath());//获取绝对路径

       } catch (IOException e) {
              e.printStackTrace();
     }

    输出：E:\Program Files\myworkspace\EngravedCode