Please help me out with zipping :(

Thank you for reading this post. I am trying to write a program to backup couple files with Zip. Everything looks fine when create just one zip archive, however, not the case if I set max. size for each archive(spanning). I spent so much time on this bug and now I am totally give up. Would anyone kindly to tell what is wrong with this code?

public static boolean Zip(File srcFile, File dscFile, int iMaxSize)
{
/* set for testing multi-disk span */
iMaxSize = 1400000; 
boolean bolStartNewFile = false;// flag to create new outputstream or not
boolean bolNewZipEntry;// flag to indicate new zip entry for archive(output file)
int iFileCreatedSoFar = 0;// keep track how many file created for multi-disk spanning
int iTotalByteWrittenSofar = 0;// keep track how many bytes have been written for each output file
                                                          //(useful for multi-spanning)
FileOutputStream fo = null;
CheckedOutputStream checksum = null;
ZipOutputStream out = null;
try 
{
byte data[] = new byte[BUFFER];
// create list of files for archive
File[] files = srcFile.listFiles();
System.out.println("files arr size: " + files.length);
for (int i = 0; i < files.length; i++) 
{
// create input stream (zip entry for each file to be archive) for zip archive
FileInputStream fi = new FileInputStream(files[i]);
BufferedInputStream origin = new BufferedInputStream(fi, BUFFER);
ZipEntry entry = new ZipEntry(files[i].toString());
bolNewZipEntry = true;
int count;
while((count = origin.read(data, 0, BUFFER)) != -1)
{
if (!bolStartNewFile)
{
// create new zip archive file name
boolean bolSetSize = (iMaxSize == 0) ? false : true;
String sFileName = getFileName(dscFile.toString(), 
++iFileCreatedSoFar, bolSetSize);
// create output stream for zip archive
fo = new FileOutputStream(sFileName);
checksum = new CheckedOutputStream(fo, new Adler32());
out = new ZipOutputStream(new BufferedOutputStream(checksum)); 
// reset flag
bolStartNewFile = true;
out.putNextEntry(entry);
bolNewZipEntry = false;
} // end if
// set outputstream to new zip entry, reset flag
if (bolNewZipEntry)
{
out.putNextEntry(entry);
bolNewZipEntry = false;
} // end if
out.write(data, 0, count);
iTotalByteWrittenSofar += count;
// do when multi-disk spanning: reset flag, close current outputstream
if ((iMaxSize > 0 ) && (iTotalByteWrittenSofar > iMaxSize))
{
bolStartNewFile = false;
out.finish();
out.close();
checksum.close();
fo.close();
out = null;
checksum = null;
fo = null;
iTotalByteWrittenSofar = 0; // reset
} // end if
} // end while
// done w/ current zip entry, close it
origin.close();
fi.close();
entry = null;
origin = null;
fi = null;
} // end for
// no multi-disk spanning event occur, close outputstream
if (iMaxSize <= 0 )
{
out.close();
checksum.close();
fo.close();
out = null;
checksum = null;
fo = null;
} // end if
} // end try
catch(Exception e) 
{
e.printStackTrace();
return false;
} // end catch
return true;
} // end Zip

Thanks ....
(formatted by Cindy using [ code][ /code] tags)
[ November 26, 2002: Message edited by: Cindy Glass ]

So exactly WHAT problem are you having when you trying using multiple files?

Hi Cindy,
Thanks for replying this post =)
The problem is when I try to unzip those archives using WinZip, the first file unzip properly (e.g. back_001.zip -- 1,291k) except the very last zip entry, which is splitted into 2) and the ones follow(e.g. back_002.zip -- 561k) will say "Cannot open file: it does not appear to be a valid archive."

Thanks again
Sincerely,
Phi