--dry-run description enhancement

Paul Benedict pbenedict at apache.org
Mon Jul 11 22:13:54 UTC 2016


Alan, I wish I found this before I responded to you, but, anyway, here you
go:

https://bugs.openjdk.java.net/browse/JDK-8160698
"java --dry-run should not cause main class be initialized"

Cheers,
Paul

On Mon, Jul 11, 2016 at 5:09 PM, Paul Benedict <pbenedict at apache.org> wrote:

> So I just tested "--dry-run" and I see it does load the class. My
> apologies. I was following the commit trail but somehow the loading of the
> class escaped me. I swore at one point it wasn't loading, but my error,
> nevertheless.
>
> Was there any debate on this issue? The problem I currently see with
> loading the class is you're still allowing static initializers to run. I
> don't see a purpose in loading the class here because you're potentially
> allowing user code to execute and causing side-effects in the JVM. If the
> purpose of JDK-8159596 is to test the resolving of the
> configuration/options, I don't see how the current behavior is therefore
> desired. To take an analogy, the Maven Release Plugin has a "dry run"
> feature to test an install. It actually doesn't do an install. But someone
> can make the argument (and I am) that Java's --dry-run is not actually dry.
> It's really just a "--no-main" but user code can still run.
>
> Cheers,
> Paul
>
> On Mon, Jul 11, 2016 at 4:39 PM, Alan Bateman <Alan.Bateman at oracle.com>
> wrote:
>
>> On 11/07/2016 22:01, Paul Benedict wrote:
>>
>> The current help of --dry-run is this:
>>> "create VM but do not execute main method"
>>>
>>> But I think it's pretty important to note that the class is also not even
>>> loaded.
>>>
>> The main class should be loaded. The original intention was that it do
>> everything except invoke the main method.
>>
>> -Alan
>>
>
>


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