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https://issues.apache.org/jira/browse/LANG-76?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12743455#action_12743455
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Lew Bloch commented on LANG-76:
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It is egregious that the project refuses to fix a bug caused by its own
intentional violation of the Java Language Specification (JLS). It is also
strange that the powers that be think this library will never be used in a Java
5+ environment - there are use cases for having a well-thought-out typesafe
enumeration that can do things not available to standard 'enum' classes, e.g.,
inherit from other enumerations or interoperate with legacy pre-1.5 systems.
This shunning of responsibility is a saddening disappointment coming from an
Apache project, especially one so fundamental and widely used as commons-lang.
Palming the bug off as "[r]elying on ... an undocumented feature" is especially
disingenuous. That classes used to initialize on references to the 'class'
literal was a bug, not a feature, and contravened the explicit statement in the
JLS second edition, s.12.4.1: "A class or interface will not be initialized
under any other circumstance." (Statement follows list of class-initialization
triggers that does not include reference to the 'class' literal.) For shame.
> [lang] EnumUtils.getEnum() doesn't work well in 1.5
> ---------------------------------------------------
>
> Key: LANG-76
> URL: https://issues.apache.org/jira/browse/LANG-76
> Project: Commons Lang
> Issue Type: Bug
> Affects Versions: 2.1
> Environment: Operating System: other
> Platform: Other
> Reporter: Igor Laberov
> Fix For: 2.4
>
>
> Hi,
> I encountered with problem using EnumUtils.getEnum() in 1.5. It appears that
> my
> Enum class should be accessed first so constructor will be called. In 1.4 it
> was
> enough to have myClass.class, so all static members were initialized. In 1.5
> it
> doesn't work.
> I noticed that static members are not initialized anymore while acessing to
> class definition. See the code
> public class Test {
> public static final class TT{
> public static final TT one = new TT();
> private TT(){
> System.out.println("Called TT" );
> }
> }
>
> public static void main(String[] args) {
> Class cl = TT.class;
> // System.out.println( TT.one);
> // System.out.println(TT.class.isAssignableFrom(String.class));
> }
> }
> In 1.4 constructor of TT is called, while in 1.5 is not.
> Actually, according to the spec
> (http://java.sun.com/docs/books/jls/second_edition/html/execution.doc.html#57946),
> this is right behavior of Java.
> Unfortunately, I didn't succeded to think about good solution..
> P.s. I know that in 1.5 we have enum built-in, but it is not the same, and we
> try to move to 1.5 without too much changes
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