-classpath vs --class-path

Nicolai Parlog nipa at codefx.org
Thu Jan 5 23:47:43 UTC 2017


 Hi Jonathan,

thanks for checking things out. :)

 so long ... Nicolai



On 05.01.2017 22:48, Jonathan Gibbons wrote:
> Nicolai,
> 
> We've identified the cause of the issue you reported.  Although
> javac accepts --class-path as an alias for -cp and -classpath, what
> is notable about your example is that it is using "classpath
> wildcards" (i.e. the "*" in -cp "mods/*"), which is implemented
> within the native javac launcher, and not in the mainstream javac
> code.   And yes, in the code in question, --class-path is not
> supported, and probably should be.
> 
> Filed: https://bugs.openjdk.java.net/browse/JDK-8172309
> 
> -- Jon
> 
> On 01/05/2017 08:33 AM, Jonathan Gibbons wrote:
>> Thank you for the report. It is obviously intended that these
>> options should simply be aliases for each other, but I will see
>> if there is something else going on to explain what you are
>> seeing.
>> 
>> -- Jon
>> 
>> 
>> On 1/5/17 3:23 AM, Nicolai Parlog wrote:
>>> Hi,
>>> 
>>> during experimentation I encountered compiler behavior that I
>>> found rather strange: It looks like the -classpath and
>>> --class-path options do not behave the same way.
>>> 
>>> In my experiment I create a bunch of modules in 'mods' and then
>>> create the last one by putting the modules on the class path
>>> (no reason, just playing around):
>>> 
>>> javac -cp "mods/*" -d classes/advent
>>> src/advent/advent/Main.java
>>> 
>>> This works and '-classpath' does, too, but '--class-path'
>>> doesn't. In that case the compiler complains that the packages
>>> contained by the modules in 'mods' do not exist.
>>> 
>>> For an executable version see here:
>>> 
>>> 
>>> https://github.com/CodeFX-org/demo-jigsaw-advent-calendar/blob/compi
ling-with-deps-as-modules/compileAndRun.sh#L41-L48
>>>
>>>
>>>
>>> 
I noticed this on b146 but it also exists in b148; both EA-Jigsaw
>>> builds.
>>> 
>>> so long ... Nicolai
>>> 
>>> 
>>> 
>> 
> 

-- 

PGP Key:
    http://keys.gnupg.net/pks/lookup?op=vindex&search=0xCA3BAD2E9CCCD509

Web:
    http://codefx.org
        a blog about software development
    https://www.sitepoint.com/java
        high-quality Java/JVM content
    http://do-foss.de
        Free and Open Source Software for the City of Dortmund

Twitter:
    https://twitter.com/nipafx


More information about the jigsaw-dev mailing list