IO-file-03 文件的长度

 package com.bwie.io;

 import java.io.File;

 public class FileDemo4 {
     /**文件字节数
      * length():字节数  文件夹 0
      *
      */
     public static void main(String[] args) {
     String path="src/userImg.GIF";
     File src = new File(path);
     System.out.println(src.length());

     String path2="src";
     File src2 = new File(path);
     System.out.println(src2.length());
     }

 }