把某个硬盘添满

package jyl.bugCreate;

import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;

public class FillThePartion
{

/**
* @param args
*/
public static void main(String[] args)
{
// TODO Auto-generated method stub
File   f   =   new   File("c:\\");  
  System.out.println("总空间："+f.getTotalSpace());  
  System.out.println("可用空间："+f.getUsableSpace());  
  long left=f.getUsableSpace();
  long fileLength=left-10*1000;
  File fillFile=new File(f,"\\fillFile");
  try
{
fillFile.createNewFile();
RandomAccessFile ra=new RandomAccessFile(fillFile,"rw");
ra.setLength(fileLength);
ra.close();
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
  System.out.println("自由空间："+f.getFreeSpace()); 
}

}