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Groups > comp.lang.java.programmer > #13460

Re: trigger static init

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glen herrmannsfeldt wrote:
> Roedy Green wrote:
> > What is the canonical way to explicitly trigger a static class to load
> > and run thestatic init without actually invoking a real method?
> 
> > you can't necessarily use newInstance since the class may not 
> > have constructors. 
> 
> As far as I know, a class automatically has a no argument constructor,
> even if you don't write one.
> 
> class myclass {
>    static int x;
> }

He meant no *accessible* constructors.

If the constructor is not accessible, its existence is moot.

And Java coding conventions call for type names to have an initial upper-case letter and be in camel case: 'MyClass'.

> compiles just fine, as does creating an object from it.
> 
> > Do you have to invent some dummy static method?
> 
> Not that I know of.

The rules for class initialization are quite explicitly listed in the JLS, which document is eminently useful no matter how much one may affect to loathe it.
<http://docs.oracle.com/javase/specs/jls/se7/html/jls-12.html#jls-12.4.2>

-- 
Lew

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Thread

trigger static init Roedy Green <see_website@mindprod.com.invalid> - 2012-04-08 23:28 -0700
  Re: trigger static init Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2012-04-09 10:32 +0300
    Re: trigger static init Roedy Green <see_website@mindprod.com.invalid> - 2012-04-09 06:09 -0700
      Re: trigger static init markspace <-@.> - 2012-04-09 09:19 -0700
      Re: trigger static init Lew <lewbloch@gmail.com> - 2012-04-09 10:33 -0700
    Re: trigger static init Lew <lewbloch@gmail.com> - 2012-04-09 10:36 -0700
      Re: trigger static init Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2012-04-11 12:52 +0000
        Re: trigger static init Patricia Shanahan <pats@acm.org> - 2012-04-11 07:04 -0700
          Re: trigger static init Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2012-04-11 15:30 +0000
            Re: trigger static init Patricia Shanahan <pats@acm.org> - 2012-04-11 09:32 -0700
              Re: trigger static init Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2012-04-22 16:09 +0000
          Re: trigger static init Steven Simpson <ss@domain.invalid> - 2012-04-12 07:38 +0100
            Re: trigger static init Patricia Shanahan <pats@acm.org> - 2012-04-12 00:36 -0700
        Re: trigger static init Joshua Cranmer <Pidgeot18@verizon.invalid> - 2012-04-11 09:39 -0500
          Re: trigger static init Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2012-04-11 14:56 +0000
          Re: trigger static init Lew <noone@lewscanon.com> - 2012-04-11 08:08 -0700
  Re: trigger static init glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-04-09 09:18 +0000
    Re: trigger static init Roedy Green <see_website@mindprod.com.invalid> - 2012-04-09 04:57 -0700
    Re: trigger static init Lew <lewbloch@gmail.com> - 2012-04-09 10:31 -0700
  Re: trigger static init Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2012-04-10 12:22 -0700

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