You use the unpack200
command to transform a packed file into a JAR file for web deployment.
Synopsis
unpack200 [ options ] input-file JAR-file
The command-line options. See Options for the unpack200 Command.
Name of the input file, which can be a pack200 gzip
file or a pack200
file. The input can also be a JAR file produced by pack200
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.
Name of the output JAR file.
Description
The unpack200
command is a native implementation that transforms a packed file produced by the pack200
into a JAR file for web deployment. An example of 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 for the unpack200 Command
-H
or --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
or--remove-pack-file
Removes the input pack file.
-v
or --verbose
Displays minimal messages. Multiple specifications of this option displays more verbose messages.
-q
or --quiet
Specifies quiet operation with no messages.
-l
filename or --log-file=
filenameSpecifies a log file where output messages are logged.
-?
or -h
or --help
Prints help information about the unpack200
command.
-V
or --version
Prints version information about the unpack200
command.
-J
optionPasses 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.
Notes
This command shouldn’t be confused with the unpack
command. They’re 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.