GNU Unzip large files

Question

A GNU Unzip procedure makes me troubles for large size files. It takes too much time.GZIPInputStream zipin = new GZIPInputStream( new FileInputStream( zipFile ) );
   byte buffer[] = new byte[8192];
   FileOutputStream out = new FileOutputStream( source );
   for ( int length; (length = zipin.read(buffer, 0, 8192)) != -1; )
       out.write( buffer, 0, length );
   out.close();
   zipin.close();Is there a way to GNU unzip a large file without reading into buffer and then writing from buffer? I mean directly operating on input zipped stream and outputting unzipped byte stream (instead of to file) for further processing. Somewhat more concurrently?

Answer 1

A GNU Unzip procedure makes me troubles for large
size files. It takes too much
time.GZIPInputStream zipin = new
GZIPInputStream( new FileInputStream( zipFile ) );
byte buffer[] = new byte[8192];
FileOutputStream out = new FileOutputStream(
am( source );
for ( int length; (length = zipin.read(buffer, 0,
0, 8192)) != -1; )
out.write( buffer, 0, length );
out.close();
zipin.close();Is there a way to GNU unzip a
p a large file without reading into buffer and then
writing from buffer? I mean directly operating on
input zipped stream and outputting unzipped byte
stream (instead of to file) for further processing.
Somewhat more concurrently?If you mean to turn a GZIPInputStream into an OutputStream, you can use [url http://java.sun.com/j2se/1.5.0/docs/api/java/io/PipedInputStream.html]PipedInputStream and [url http://java.sun.com/j2se/1.5.0/docs/api/java/io/PipedOutputStream.html]PipedOutputStream. It involves creating a new thread and hooking the Pipes up correctly.