获取文件路径的几种方式

 File f = new File(this.getClass().getResource("/").getPath()); 
 System.out.println(f); 
/*  结果: 
  C:/Documents%20and%20Settings/Administrator/workspace/projectName/bin */
  //获取当前类的所在工程路径; 
  //如果不加“/” 
  File f = new File(this.getClass().getResource("").getPath()); 
  System.out.println(f); 
 /* 结果： 
  C:/Documents%20and%20Settings/Administrator/workspace
   /projectName/bin/com/test 
  获取当前类的绝对路径；*/

File directory = new File("");//参数为空 
  String courseFile = directory.getCanonicalPath() ; 
  System.out.println(courseFile); 
  /*结果： 
  C:/Documents and Settings/Administrator/workspace/projectName 
  获取当前类的所在工程路径; */

URL xmlpath = this.getClass().getClassLoader().getResource("selected.txt"); 
  System.out.println(xmlpath); 
  /*结果： 
  file:/C:/Documents%20and%20Settings/Administrator
         /workspace/projectName/bin/selected.txt 
  获取当前工程src目录下selected.txt文件的路径 */

  System.out.println(System.getProperty("user.dir")); 
/*  结果： 
  C:/Documents and Settings/Administrator/workspace/projectName 
  获取当前工程路径 */

  System.out.println( System.getProperty("java.class.path")); 
  /*结果： 
  C:/Documents and Settings/Administrator/workspace/projectName/bin */