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  31 
  32 Provides classes for reading and writing the standard ZIP and GZIP
  33 file formats.  Also includes classes for compressing and decompressing
  34 data using the DEFLATE compression algorithm, which is used by the
  35 ZIP and GZIP file formats. Additionally, there are utility classes
  36 for computing the CRC-32, CRC-32C and Adler-32 checksums of arbitrary
  37 input streams.
  38 
  39 
  40 <h2>Package Specification</h2>
  41 
  42 <ul>
  43   <li><a href="http://www.info-zip.org/doc/appnote-19970311-iz.zip">
  44       Info-ZIP Application Note 970311
  45       </a> - a detailed description of the Info-ZIP format upon which
  46       the <code>java.util.zip</code> classes are based.
  47   <li><a name="zip64">An implementation may optionally support the ZIP64(tm) format extensions
  48       defined by the </a>
  49       <a href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">
  50       PKWARE ZIP File Format Specification</a>. The ZIP64(tm) format extensions
  51       are used to overcome the size limitations of the original ZIP format.
  52   <li><a name="lang_encoding">APPENDIX D of </a><a href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">
  53       PKWARE ZIP File Format Specification</a> - Language Encoding Flag (EFS) to
  54       encode ZIP entry filename and comment fields using UTF-8.
  55   <li><a href="http://www.ietf.org/rfc/rfc1950.txt">
  56       ZLIB Compressed Data Format Specification version 3.3</a>
  57       &nbsp;
  58       <a href="http://www.ietf.org/rfc/rfc1950.txt.pdf">(pdf)</a>
  59       (RFC 1950)
  60   <li><a href="http://www.ietf.org/rfc/rfc1951.txt">
  61       DEFLATE Compressed Data Format Specification version 1.3</a>
  62       &nbsp;
  63       <a href="http://www.ietf.org/rfc/rfc1951.txt.pdf">(pdf)</a>
  64       (RFC 1951)
  65   <li><a href="http://www.ietf.org/rfc/rfc1952.txt">
  66       GZIP file format specification version 4.3</a>
  67       &nbsp;
  68       <a href="http://www.ietf.org/rfc/rfc1952.txt.pdf">(pdf)</a>
  69       (RFC 1952)
  70   <li>CRC-32 checksum is described in RFC 1952 (above)
  71   <li>CRC-32C checksum is described in 
  72       <a href="http://www.ietf.org/rfc/rfc3720.txt">Internet Small Computer Systems Interface (iSCSI)</a>
  73       &nbsp;
  74       <a href="http://www.ietf.org/rfc/rfc3720.txt.pdf">(pdf)</a>
  75       (RFC 3720)
  76   <li>Adler-32 checksum is described in RFC 1950 (above)
  77 </ul>
  78 
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  89 @since 1.1
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