JDK-8171524 : jar --help doesn't provide information that stdout and stdin can be used as output and input for tool
  • Type: Bug
  • Component: tools
  • Sub-Component: jar
  • Affected Version: 9
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2016-12-20
  • Updated: 2017-02-09
  • Resolved: 2017-02-01
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JDK 10 JDK 9
10Fixed 9 b156Fixed
Related Reports
Relates :  
JDK-8071566 - Improve testing for multi-version JAR file maker tool
Description
jar --help contains examples like
"jar --create --file classes.jar Foo.class Bar.class"

but it unclear what stdout can be used here
jar --create Foo.class Bar.class > classes.jar

or jar --list < classes.jar

Also there is no information about loading options from file. jar --create @argfile