Contents Previous Next
unpack200
Transforms a packed file produced by pack200
(1) 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) with an effort of0
, 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)
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
, orkeep
on all entries within a JAR file. The default mode iskeep
. If the value istrue
orfalse
, 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.- -Joption
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. Seejava
(1).
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
Compression Formats for Network Deployment at
http://docs.oracle.com/javase/8/docs/technotes/guides/jweb/networking/compression_formats.html
The Java SE Technical Documentation page at
http://docs.oracle.com/javase/