用Java得到硬盘空间

用Java得到硬盘空间，有3种方法：

1、 调用system的command，然后分析得到的结果，这种方法有很强的系统依赖性，Linux下和win下要分别写程序。下面是一个win下的例子，编译成功之后，运行java Diskspace yourdir(比如c：)

import java.io.BufferedReader;

import java.io.InputStreamReader;



/**

* Determine free disk space for a given directory by

* parsing the output of the dir command.

* This class is inspired by the code at

* Works only under Windows under certain circumstances.

* Yes, it磗 that shaky.

* Requires Java 1.4 or higher.

* @[EMAIL PROTECTED]

*Marco Schmidt

*/

public class Diskspace

{

private Diskspace()

{

// prevent instantiation of this class

}



/**

* Return available free disk space for a directory.

* @[EMAIL PROTECTED]

dirName name of the directory

* @[EMAIL PROTECTED]

free disk space in bytes or -1 if unknown

*/

public static long getFreeDiskSpace(String dirName)

{

try

{

// guess correct 磀ir