# man > unpack200(1)

[_unpack200_(1)](https://www.chedong.com/phpMan.php/man/unpack200/1/markdown)                            Java Deployment Tools                           [_unpack200_(1)](https://www.chedong.com/phpMan.php/man/unpack200/1/markdown)

## NAME
       unpack200 - Transforms a packed file produced by [pack200(1)](https://www.chedong.com/phpMan.php/man/pack200/1/markdown) into a JAR file for web
       deployment.

## SYNOPSIS
       **unpack200 **[ _options_ ] input-file _JAR-file_


       _options_
              The command-line options. See Options.

       _input-file_
              Name  of the input file, which can be a pack200 gzip file or a pack200 file. The input
              can also be JAR file produced by [**pack200**(1)](https://www.chedong.com/phpMan.php/man/pack200/1/markdown) with an effort of **0**,  in  which  case  the
              contents of the input file are copied to the output JAR file with the Pack200 marker.

       _JAR-file_
              Name of the output JAR file.

## DESCRIPTION
       The  **unpack200  **command  is a native implementation that transforms a packed file produced by
       [**pack200(1)](https://www.chedong.com/phpMan.php/man/pack200/1/markdown) **into a  JAR  file.  A  typical  usage  follows.  In  the  following  example,  the
       **myarchive.jar  **file  is  produced  from  **myarchive.pack.gz **with the default **unpack200 **command
       settings.

### unpack200 myarchive.pack.gz myarchive.jar


## OPTIONS
       -Hvalue --deflate-hint=_value_
              Sets the deflation to be **true**, **false**, or **keep **on all entries within a  JAR  file.  The
              default  mode  is  **keep**. If the value is **true **or **false**, then the **--deflate=hint **option
              overrides the default behavior and sets the deflation mode on all entries  within  the
              output JAR file.

       -r --remove-pack-file
              Removes the input pack file.

       -v --verbose
              Displays  minimal  messages.  Multiple  specifications  of  this  option displays more
              verbose messages.

       -q --quiet
              Specifies quiet operation with no messages.

       -lfilename --log-file=_filename_
              Specifies a log file where output messages are logged.

       -? -h --help
              Prints help information about the **unpack200 **command.

       -V --version
              Prints version information about the **unpack200 **command.

### -J_option_
              Passes option to the Java  Virtual  Machine,  where  **option  **is  one  of  the  options
              described  on  the  reference page for the Java application launcher. For example, **-J-**
              **Xms48m **sets the startup memory to 48 MB. See [java(1)](https://www.chedong.com/phpMan.php/man/java/1/markdown).

## NOTES
       This command should not be confused with the **unpack **command.  They  are  distinctly  separate
       products.

       The  Java  SE API Specification provided with the JDK is the superseding authority in case of
       discrepancies.

## EXIT STATUS
       The following exit values are returned: 0 for successful completion,  and  a  value  that  is
       greater than 0 when an error occurred.

## SEE ALSO
       • [pack200(1)](https://www.chedong.com/phpMan.php/man/pack200/1/markdown)

       • [jar(1)](https://www.chedong.com/phpMan.php/man/jar/1/markdown)

       • [jarsigner(1)](https://www.chedong.com/phpMan.php/man/jarsigner/1/markdown)

       • Pack200                       and                       Compression                      at
         <http://docs.oracle.com/javase/8/docs/technotes/guides/deployment/deployment>-
         guide/pack200.html

       • The Java SE Technical Documentation page at <http://docs.oracle.com/javase/>

JDK 8                                     21 November 2013                              [_unpack200_(1)](https://www.chedong.com/phpMan.php/man/unpack200/1/markdown)