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Re: Are Outer Classes Loaded Lazily?

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Yes I am interested in loading and not in
intialization. Unfortuantely I have not yet
managed to add some good load tracing

to my app. The suggestion -verbose:class
is a command line option, but since I have
anyway a custom class loader,

maybe I can switch on/off the verbose
flag programmatically or pipe my own logging
message to somewhere, to figure out

whats going on...

Eric Sosman schrieb:
> On 9/21/2017 3:18 PM, Marcel Mueller wrote:
>> On 20.09.17 19.23, j4n bur53 wrote:
>>> Assume I have a nested inner class Inner,
>>> and I do the following:
>>>
>>>     Class x=Class.forName('../Outer$Inner');
>>>
>>> And then I do the following:
>>>
>>>     Class y=x.getEnclosingClass();
>>>
>>> Is the enclosing class '../Outer' already
>>> loaded during the Class.forName() or only
>>> when I do getEnclosingClass() ?
>>
>> AFAIK there are no dependencies in static construction of class types,
>> regardless whether they are inner, outer or whatever.
>> The only guarantee is, that a class initialization is run before any
>> member access. No more, no less. So unless you create such a
>> dependency you cannot assume the outer class to be initialized.
>>
>> Of course, the rule "before" is also fulfilled if the outer class
>> would be initialized immediately. So at the end it is implementation
>> defined.
>> But I assume that it is unlikely that an implementation initializes
>> the outer class earlier than required, just because this could break a
>> dependency of Outer on Inner. I.e. if the initialization of the outer
>> class accesses static members of Inner.
>
>     Note that the O.P. did not ask when the classes were
> initialized, but when they were loaded.  Loading is
> described (briefly) in JLS 12.2, linking in 12.3, and
> initialization in 12.4.  For a more comprehensive (and
> harder to follow) description, see JVMS 5.3-5.5.
>

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Thread

Are Outer Classes Loaded Lazily? j4n bur53 <janburse@fastmail.fm> - 2017-09-20 19:23 +0200
  Re: Are Outer Classes Loaded Lazily? Eric Sosman <esosman@comcast-dot-net.invalid> - 2017-09-20 17:45 -0400
    Re: Are Outer Classes Loaded Lazily? j4n bur53 <janburse@fastmail.fm> - 2017-09-21 01:18 +0200
      Re: Are Outer Classes Loaded Lazily? lewbloch@gmail.com - 2017-09-20 17:28 -0700
        Re: Are Outer Classes Loaded Lazily? j4n bur53 <janburse@fastmail.fm> - 2017-09-21 09:29 +0200
          Re: Are Outer Classes Loaded Lazily? j4n bur53 <janburse@fastmail.fm> - 2017-09-21 09:40 +0200
          Re: Are Outer Classes Loaded Lazily? lewbloch@gmail.com - 2017-09-21 11:44 -0700
  Re: Are Outer Classes Loaded Lazily? Marcel Mueller <news.5.maazl@spamgourmet.org> - 2017-09-21 21:18 +0200
    Re: Are Outer Classes Loaded Lazily? Eric Sosman <esosman@comcast-dot-net.invalid> - 2017-09-21 16:20 -0400
      Re: Are Outer Classes Loaded Lazily? j4n bur53 <janburse@fastmail.fm> - 2017-09-22 11:12 +0200
        Re: Are Outer Classes Loaded Lazily? Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2017-09-22 15:55 -0400
          Re: Are Outer Classes Loaded Lazily? j4n bur53 <janburse@fastmail.fm> - 2017-09-23 18:33 +0200
    Re: Are Outer Classes Loaded Lazily? lewbloch@gmail.com - 2017-09-22 13:48 -0700
      Re: Are Outer Classes Loaded Lazily? Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2017-09-22 23:46 -0400
        Re: Are Outer Classes Loaded Lazily? lewbloch@gmail.com - 2017-09-25 13:23 -0700
      Re: Are Outer Classes Loaded Lazily? j4n bur53 <janburse@fastmail.fm> - 2017-09-24 17:39 +0200
        Re: Are Outer Classes Loaded Lazily? Eric Sosman <esosman@comcast-dot-net.invalid> - 2017-09-25 07:38 -0400
        Re: Are Outer Classes Loaded Lazily? lewbloch@gmail.com - 2017-09-25 13:25 -0700

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