jbzip2

This repository was exported from the jbzip2 Google Code project to ensure it survives the service’s shutdown. We are not the library’s authors; expect no updates here.

The original description of the Google Code project follows.

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jbzip2 is a Java bzip2 compression/decompression library. It can be used as a replacement for the Apache CBZip2InputStream / CBZip2OutputStream classes

News

• 13/10/2011 jbzip2-0.9.1 is now available. This release fixes numerous bugs in both compression and decompression.
• 25/05/2011 jbzip2-0.9 is now available

Features

• A decompressor that is typically 5% to 10% faster than CBZip2InputStream
• A compressor of broadly comparable speed to CBZip2OutputStream (slightly slower in some cases, rather faster than others)
• Legible, well factored code suitable for studying how the algorithms of BZip2 work

Usage

• To compress data, pass it through a BZip2OutputStream
• To decompress data, pass it through a BZip2InputStream

Testers Wanted

• jbzip2 has been tested successfully on a moderately large and diverse body of data, but more is needed. Please help by testing jbzip2 on your own data

• Testing can be carried out using the RoundTrip utility included in the distribution:

  java -cp jbzip2-0.9.1.jar demo.RoundTrip /path/to/test/data

• Each ordinary readable file beneath the given path will be compressed into a temporary file, then decompressed (no files will be created or altered in place). If any error is encountered, the test will stop with an exception

• Reports of success, as well as failure would be most welcome. Feedback can be sent to the author