What you can do with Java Zip package ?

java.util.zip provides :

Classes for reading / writing the standard and compressed files or archives in the ZIP and GZIP file formats.

Basically, ZIP file forms for the JAR file format, so it is easier to include classes for manipulating ZIP files as part of the standard Java APIs.

This functionality is very useful, because it saves the time of creating custom file archive formats for your applications.

Classes

GZIPInputStream

implements a stream filter for reading compressed data in the GZIP format

GZIPOutputStream

implements a stream filter for writing compressed data in the GZIP file format

ZipEntry

used to represent a ZIP file entry

ZipFile

used to read entries from a zip file

ZipInputStream

implements an input stream filter for reading files in the ZIP file format

ZipOutputStream

implements an output stream filter for writing files in the ZIP file format