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Re: Getting package info from JAR file

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In article <j6f4gl$oq1$1@dont-email.me>, markspace <-@.> wrote:

> On 10/4/2011 6:51 AM, laredotornado wrote:
> >
> > I'm on Win XP using Java 7 but I have access to Unix tools using 
> > Cygwin.  I was wondering, short of unzipping a JAR file and 
> > searching through it, if there's a way to figure out the package to 
> > which a class belongs, assuming I know the class name and that the 
> > JAR file definitely includes a class by this name.
> 
> 
> Not really, no.  If you don't know the package name, the class could 
> belong to any package.  What package does the annotation @ManagedBean 
> belong too?  Well, on my system, there are three ManagedBeans which 
> belong to different packages, so which one did you want?
> 
> You've got to have the package name or you don't know which class it 
> is.

You can narrow down the list of matching simple names like this:

$ jar tf src.jar | grep "/Timer\."
src/java/util/Timer.java
src/javax/management/timer/Timer.java
src/javax/swing/Timer.java

And expand the search using find:

$ find . -name \*.jar | xargs -I % jar tf % | grep "/Timer\."
doc/api/java/util/Timer.html
doc/api/java/util/class-use/Timer.html
doc/api/javax/management/timer/Timer.html
doc/api/javax/management/timer/class-use/Timer.html
doc/api/javax/swing/Timer.html
doc/api/javax/swing/class-use/Timer.html
src/java/util/Timer.java
src/javax/management/timer/Timer.java
src/javax/swing/Timer.java

-- 
John B. Matthews
trashgod at gmail dot com
<http://sites.google.com/site/drjohnbmatthews>

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Getting package info from JAR file laredotornado <laredotornado@zipmail.com> - 2011-10-04 06:51 -0700
  Re: Getting package info from JAR file markspace <-@.> - 2011-10-04 07:16 -0700
    Re: Getting package info from JAR file "John B. Matthews" <nospam@nospam.invalid> - 2011-10-04 13:49 -0400

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