擷取一個路徑下的所有檔案及其子檔案，子檔案夾下的子檔案….

public static void readfile(String filepath) throws FileNotFoundException,
 IOException {
  try {

   File file = new File(filepath);
   if (!file.isDirectory()) {
    System.out.println("檔案");
    System.out.println("path=" + file.getPath());
    System.out.println("absolutepath=" + file.getAbsolutePath());
    System.out.println("name=" + file.getName());

   }
   else if (file.isDirectory()) {
    System.out.println("檔案夾");
    String[] filelist = file.list();
    for (int i = 0; i < filelist.length; i++) {
     System.out.println("filelist="+filelist);
     File readfile = new File(filepath + "//" + filelist[i]);
     if (!readfile.isDirectory()) {
      System.out.println("path=" + readfile.getPath());
      System.out.println("absolutepath=" + readfile.getAbsolutePath());
      System.out.println("name=" + readfile.getName());

     }
     else if (readfile.isDirectory()) {
      readfile(filepath + "//" + filelist[i]);
     }
    }

   }

  }
  catch (FileNotFoundException e) {
   System.out.println("readfile() Exception:" + e.getMessage());
  }
 }

 public static void main(String[] args) {
  try {
  readfile("E:/cmxie/data");
   //deletefile("D:/file");
  }
  catch (FileNotFoundException ex) {
  }
  catch (IOException ex) {
  }
 }