Re: [jruby-user] Re: Differences Between MyClass.class and getClass() in JRuby

...or perhaps the development version JRuby9000 ? I mean


On Mon, Jul 7, 2014 at 9:51 PM, Eric West <[email protected]> wrote:

> I’m getting the expected result. Using Rsense <http://rsense.github.io/>
> as an example:
>
> require "rsense-core"
> Java::org.cx4a.rsense.typing::Graph.java_class#=> class org.cx4a.rsense.typing.Graph
>
> graph = Java::org.cx4a.rsense.typing::Graph.new#=> #<Java::OrgCx4aRsenseTyping::Graph:0x6d79d6d1>
>
> graph.java_class#=> class org.cx4a.rsense.typing.Graph
>
> graph.get_class#=> class org.cx4a.rsense.typing.Graph
>
> Can you share some example code that produces the result your getting
> above? Also, I’m running this on JRuby 1.7.12 on Java 7, is it possible you
> are running an older version of JRuby, or perhaps the development version,
> JRuby?
> ​
>
>
> On Mon, Jul 7, 2014 at 7:26 PM, s shaw <[email protected]> wrote:
>
>> (Original message was badly mangled, so resending)
>>
>> In Java MyClass.class and (new MyClass()).getClass() return the same
>> thing. In JRuby the equivalent calls would be Java:: MyClass.java_class
>> and Java::MyClass.new.get_class right? But these calls return
>> Java::JavaClass and Java::JavaLang::Class respectively.
>>
>> Java::JavaClass seems like a java.lang.Class: it has annotation_present()
>> and encosing_class() methods. But if you call declared_fields() it returns
>> an array of Java::JavaField, which does not have java.lang.Field methods
>> like generic_type().
>>
>> How is one supposed to get a true instance of java.lang.Class , one that
>> returns java.lang.Field when declared_fields() is called? It appears that
>> one must first instantiate the given class and then call get_class; of
>> course this does not work for abstract classes...
>>
>>
>