后面那段代码是什么意思的呢？

[icebeer2008]

<%File dir=new File("e:/test","Students");
dir.mkdir();//承ゅン
File f=new File(dir,"hello.txt");
try{
FileOutputStream mm=new FileOutputStream(f);
BufferedOutputStream bufferout=new BufferedOutputStream(mm);
byte b[]="我是猪头<br>nice to meet you".getBytes();
bufferout.write(b);
bufferout.flush();
bufferout.close();
mm.close();
FileInputStream in=new FileInputStream(f);
BufferedInputStream bufferin=new BufferedInputStream(in);
byte c[]=new byte[60];
int n=0;
while((n=bufferin.read(c))!=-1)
{String temp=new String(c,0,n);
out.print(temp);
}
bufferin.close();
in.close();
}
catch(IOException e)
{
}
%>