用java获取文件夹的大小

用java获取文件夹的大小

文章分类:Java编程

/**
* <p>
* Created on 2007-5-7 下午11:11:50 <br>
* Copyright (c) 2007, All rights reserved.
* </p>
* @author Widen
* @version: 1.0.0
*/
package
 com.widen.webstory.test;

import
 java.io.File;

public
 
class
 GetFileSize
{
    // 递归
    public
 
long
 getFileSize(File f)
        throws
 Exception
    {
        long
 size = 
0
;
        File flist[] = f.listFiles();
        for
 (
int
 i = 
0
; i < flist.length; i++)
        {
            if
 (flist[i].isDirectory())
            {
                size = size + getFileSize(flist[i]);
            } else
            {
                size = size + flist[i].length();
            }
        }
        return
 size;
    }

    public
 
static
 
void
 main(String args[])
    {
        GetFileSize g = new
 GetFileSize();
        long
 startTime = System.currentTimeMillis();
        try
        {
            File ff = new
 File(
"d:\\application-data"
);
            long
 l = g.getFileSize(ff);
            System.out.println("d:\\application-data 目录的大小为："
 + l + 
"字节..."
);
        } catch
 (Exception e)
        {
            e.printStackTrace();
        }
        long
 endTime = System.currentTimeMillis();
        System.out.println("总共花费时间为："
 + (endTime - startTime) + 
"毫秒..."
);
    }
}