java读取文件夹下的所有文件夹和文件

import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.File;

 public class ReadFile {
   public ReadFile() {}

   /**
    * 删除某个文件夹下的所有文件夹和文件
    * @param delpath String
    * @throws FileNotFoundException
    * @throws IOException
    * @return boolean
    */
   public static boolean deletefile(String delpath) throws FileNotFoundException,
       IOException {
     try {

       File file = new File(delpath);
       if (!file.isDirectory()) {
         System.out.println("1");
         file.delete();
       }
       else if (file.isDirectory()) {
         System.out.println("2");
         String[] filelist = file.list();
         for (int i = 0; i < filelist.length; i++) {
           File delfile = new File(delpath + "\\" + filelist[i]);
           if (!delfile.isDirectory()) {
             System.out.println("path=" + delfile.getPath());
             System.out.println("absolutepath=" + delfile.getAbsolutePath());
             System.out.println("name=" + delfile.getName());
             delfile.delete();
             System.out.println("删除文件成功");
           }
           else if (delfile.isDirectory()) {
             deletefile(delpath + "\\" + filelist[i]);
           }
         }
         file.delete();

       }

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

   /**
    * 删除某个文件夹下的所有文件夹和文件
    * @param delpath String
    * @throws FileNotFoundException
    * @throws IOException
    * @return boolean
    */
   public static boolean readfile(String filepath) throws FileNotFoundException,
       IOException {
     try {

       File file = new File(filepath);
       if (!file.isDirectory()) {
         System.out.println("文件");
         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("文件夹");
         String[] filelist = file.list();
         for (int i = 0; i < filelist.length; i++) {
           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());
     }
     return true;
   }

   public static void main(String[] args) {
     try {
       readfile("D:/file");
       //deletefile("D:/file");
     }
     catch (FileNotFoundException ex) {
     }
     catch (IOException ex) {
     }
     System.out.println("ok");
   }

 }