Groups > comp.lang.java.programmer > #18389

Re: startup code

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Date	Wed, 29 Aug 2012 02:54:30 -0700
From	Patricia Shanahan <pats@acm.org>
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Subject	Re: startup code
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On 8/29/2012 2:42 AM, Patricia Shanahan wrote:
> On 8/29/2012 12:21 AM, Roedy Green wrote:
>> On Tue, 28 Aug 2012 14:00:47 -0700 (PDT), Lew <lewbloch@gmail.com>
>> wrote, quoted or indirectly quoted someone who said :
>>
>>>
>>> The class init block won't run until the class is initialized
>>
>> I think he means by "the program" the class name invoked on the
>> command line.  In that case the static init blocks in that class will
>> execute even before the main method.
>
> It is very important to say that only the class containing the main
> method is initialized on program start-up. I would agree with "static
> init block in the class containing the main method" as an answer to the
> original question.
...

Correction to my own post. In addition to the class that contains the
main method, there are other classes, such as its superclasses, classes
needed to execute its initialization code, and system classes that do
get initialized on start-up.

If a class is not needed to run the main method it does not even get
loaded, let alone initialized.

Patricia

Thread

startup code bob smith <bob@coolfone.comze.com> - 2012-08-28 11:48 -0700
  Re: startup code Roedy Green <see_website@mindprod.com.invalid> - 2012-08-28 11:53 -0700
    Re: startup code Lew <lewbloch@gmail.com> - 2012-08-28 14:00 -0700
      Re: startup code Robert Klemme <shortcutter@googlemail.com> - 2012-08-28 23:48 +0200
        Re: startup code Lew <lewbloch@gmail.com> - 2012-08-28 15:25 -0700
        Re: startup code Patricia Shanahan <pats@acm.org> - 2012-08-29 08:27 -0700
          Re: startup code bob smith <bob@coolfone.comze.com> - 2012-08-29 11:18 -0700
            Re: startup code Patricia Shanahan <pats@acm.org> - 2012-08-29 11:58 -0700
              Re: startup code Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-08-29 15:41 -0400
                Re: startup code Lew <lewbloch@gmail.com> - 2012-08-29 13:04 -0700
                Re: startup code Robert Klemme <shortcutter@googlemail.com> - 2012-08-29 22:06 +0200
                Re: startup code Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-08-29 17:14 -0400
      Re: startup code Roedy Green <see_website@mindprod.com.invalid> - 2012-08-29 00:21 -0700
        Re: startup code Patricia Shanahan <pats@acm.org> - 2012-08-29 02:42 -0700
          Re: startup code Patricia Shanahan <pats@acm.org> - 2012-08-29 02:54 -0700
    Re: startup code Arne Vajhøj <arne@vajhoej.dk> - 2012-08-28 19:20 -0400
  Re: startup code Jeff Higgins <jeff@invalid.invalid> - 2012-08-28 15:22 -0400
  Re: startup code Arne Vajhøj <arne@vajhoej.dk> - 2012-08-28 19:19 -0400

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