Java_File类讲解_打印目录树状结构_递归算法

 package cn.xiaocangtian.testFile;

 import java.io.File;

 public class FileTree {
     public static void main(String[] args) {
         File f = new File("E:/Java_All_Code/TestFile/src/cn/xiaocangtian/testFile");
         printFile(f, 0);
     }

     static void printFile(File file, int level) {
         // TODO Auto-generated method stub
         for (int i = 0; i < level; i++) {
             System.out.print("-");
         }
         System.out.println(file.getName());

         //如果是目录
         if (file.isDirectory()) {
             File[] files = file.listFiles();
             //遍历目录下的全部文件
             for (File temp : files) {
                 printFile(temp, level + 1);
             }

         }
     }

 }