unpack200 [options] packedfile jarfile
unpack200 unpacks a JAR file that has been compressed, or packed, by the pack200 tool, and optionally additionally compressed with gzip. Specify the name of the packed file and the name of the JAR file to unpack it to on the command line.
Because unpack200 is used as part of the Java installation process, it is a native application that can run on a system without a Java interpreter.
All unpack200 options exist in both a long form that begins with a double dash and a single-letter form that begins with a single dash. When the option requires a value, the value should be separated from the long form of the option with an equals sign and no space or should immediately follow the short form with no intervening space or punctuation.