From behrangsa at gmail.com  Fri Jun 14 01:26:37 2013
From: behrangsa at gmail.com (Behrang Saeedzadeh)
Date: Fri, 14 Jun 2013 11:26:37 +1000
Subject: Dynamic (i.e responding to methodNotFound) classes in Java
Message-ID: <CAERAJ+8RJcd=qZudfpywPVsfDVoCZd_mX8m5C4UbGLKf3t7Mnw@mail.gmail.com>

Hi,

A couple of years ago I downloaded an experimental build of JDK with
invokedynamic support and it contained a class (DynamicObject?) that any
method could be invoked on its subclasses without any compile time errors.

Does this class still exist? I can't find it anymore in the API docs.

Cheers,
Behrang Saeedzadeh
http://www.behrang.org


From john.r.rose at oracle.com  Fri Jun 14 02:05:48 2013
From: john.r.rose at oracle.com (John Rose)
Date: Thu, 13 Jun 2013 19:05:48 -0700
Subject: Dynamic (i.e responding to methodNotFound) classes in Java
In-Reply-To: <CAERAJ+8RJcd=qZudfpywPVsfDVoCZd_mX8m5C4UbGLKf3t7Mnw@mail.gmail.com>
References: <CAERAJ+8RJcd=qZudfpywPVsfDVoCZd_mX8m5C4UbGLKf3t7Mnw@mail.gmail.com>
Message-ID: <AE7DEEE1-B6D3-45B2-BD20-303E70E6740E@oracle.com>

On Jun 13, 2013, at 6:26 PM, Behrang Saeedzadeh <behrangsa at gmail.com> wrote:

> Hi,
> 
> A couple of years ago I downloaded an experimental build of JDK with
> invokedynamic support and it contained a class (DynamicObject?) that any
> method could be invoked on its subclasses without any compile time errors.
> 
> Does this class still exist? I can't find it anymore in the API docs.

No.  There were partial prototypes in this direction as part of JSR 292, but they were abandoned in 2009.  Here is a proposal from that time frame:
  https://wiki.openjdk.java.net/display/mlvm/DynamicJava

Nothing like this exists or was built in any usable way.

Untyped or "duck typed" invocation of objects can be done easily enough with third-party libraries, or with reflection, or using a dynamic language like JavaScript or JRuby or ${your_favorite_jvm_language}.

In my opinion, Java the language is unlikely to support such a thing in the near future, since there are many reasonable alternatives.

? John

From behrangsa at gmail.com  Fri Jun 14 04:16:41 2013
From: behrangsa at gmail.com (Behrang Saeedzadeh)
Date: Fri, 14 Jun 2013 14:16:41 +1000
Subject: Dynamic (i.e responding to methodNotFound) classes in Java
In-Reply-To: <AE7DEEE1-B6D3-45B2-BD20-303E70E6740E@oracle.com>
References: <CAERAJ+8RJcd=qZudfpywPVsfDVoCZd_mX8m5C4UbGLKf3t7Mnw@mail.gmail.com>
	<AE7DEEE1-B6D3-45B2-BD20-303E70E6740E@oracle.com>
Message-ID: <CAERAJ+8c7wV3n3nfLL5EH_8Z49NA40jKcqrbBKGvcmZbOMSyCw@mail.gmail.com>

Thanks for the clarification John. I also believe this was inconsistent
with Java's philosophy, but I was just wondering what happened to that
stuff.

Cheers,
Behrang Saeedzadeh
http://www.behrang.org


On Fri, Jun 14, 2013 at 12:05 PM, John Rose <john.r.rose at oracle.com> wrote:

> On Jun 13, 2013, at 6:26 PM, Behrang Saeedzadeh <behrangsa at gmail.com>
> wrote:
>
> > Hi,
> >
> > A couple of years ago I downloaded an experimental build of JDK with
> > invokedynamic support and it contained a class (DynamicObject?) that any
> > method could be invoked on its subclasses without any compile time
> errors.
> >
> > Does this class still exist? I can't find it anymore in the API docs.
>
> No.  There were partial prototypes in this direction as part of JSR 292,
> but they were abandoned in 2009.  Here is a proposal from that time frame:
>   https://wiki.openjdk.java.net/display/mlvm/DynamicJava
>
> Nothing like this exists or was built in any usable way.
>
> Untyped or "duck typed" invocation of objects can be done easily enough
> with third-party libraries, or with reflection, or using a dynamic language
> like JavaScript or JRuby or ${your_favorite_jvm_language}.
>
> In my opinion, Java the language is unlikely to support such a thing in
> the near future, since there are many reasonable alternatives.
>
> ? John


From curoli at gmail.com  Fri Jun 14 10:17:09 2013
From: curoli at gmail.com (Oliver Ruebenacker)
Date: Fri, 14 Jun 2013 06:17:09 -0400
Subject: Dynamic (i.e responding to methodNotFound) classes in Java
In-Reply-To: <AE7DEEE1-B6D3-45B2-BD20-303E70E6740E@oracle.com>
References: <CAERAJ+8RJcd=qZudfpywPVsfDVoCZd_mX8m5C4UbGLKf3t7Mnw@mail.gmail.com>
	<AE7DEEE1-B6D3-45B2-BD20-303E70E6740E@oracle.com>
Message-ID: <CAA=X4OArXNVsmTR-mYGif3mqmhZi-ZqJ=EHRs-ROpL_PDjHd1g@mail.gmail.com>

     Hello,

On Thu, Jun 13, 2013 at 10:05 PM, John Rose <john.r.rose at oracle.com> wrote:

>
> Untyped or "duck typed" invocation of objects can be done easily enough
> with third-party libraries, or with reflection, or using a dynamic language
> like JavaScript or JRuby or ${your_favorite_jvm_language}.
>

  Can JavaScript be compiled to Java bytecode?

     Take care
     Oliver

-- 
Head of Systems Biology Task Force at PanGenX (http://www.pangenx.com)
Any sufficiently advanced technology is indistinguishable from magic.


From forax at univ-mlv.fr  Fri Jun 14 10:31:59 2013
From: forax at univ-mlv.fr (Remi Forax)
Date: Fri, 14 Jun 2013 12:31:59 +0200
Subject: Dynamic (i.e responding to methodNotFound) classes in Java
In-Reply-To: <CAA=X4OArXNVsmTR-mYGif3mqmhZi-ZqJ=EHRs-ROpL_PDjHd1g@mail.gmail.com>
References: <CAERAJ+8RJcd=qZudfpywPVsfDVoCZd_mX8m5C4UbGLKf3t7Mnw@mail.gmail.com>
	<AE7DEEE1-B6D3-45B2-BD20-303E70E6740E@oracle.com>
	<CAA=X4OArXNVsmTR-mYGif3mqmhZi-ZqJ=EHRs-ROpL_PDjHd1g@mail.gmail.com>
Message-ID: <51BAF11F.1000502@univ-mlv.fr>

On 06/14/2013 12:17 PM, Oliver Ruebenacker wrote:
>       Hello,
>
> On Thu, Jun 13, 2013 at 10:05 PM, John Rose <john.r.rose at oracle.com> wrote:
>
>> Untyped or "duck typed" invocation of objects can be done easily enough
>> with third-party libraries, or with reflection, or using a dynamic language
>> like JavaScript or JRuby or ${your_favorite_jvm_language}.
>>
>    Can JavaScript be compiled to Java bytecode?

yes, take a look to OpenJDK project named Nashorn.

>
>       Take care
>       Oliver
>

R?mi



From frans at meruvian.org  Sat Jun 15 06:00:50 2013
From: frans at meruvian.org (Frans Thamura)
Date: Sat, 15 Jun 2013 13:00:50 +0700
Subject: OpenJDK and Android Studio
Message-ID: <CAOeeQyoQeodMvkwwN_-aDV67DNfeaNv5Yd59kjrkfp5zkVewbw@mail.gmail.com>

An interesting news in I/O is Android Studio, run on JetBrain's platform.

I try to run in Ubuntu, and got this message. and will jetbrain lead
the graphics in OpenJDK backed by Google ?


OpenJDK Runtime Environment (IcedTea6 1.12.3) (6b27-1.12.3-0ubuntu1~12.04.1)
OpenJDK Server VM (build 20.0-b12, mixed mode)
WARNING: You are launching the IDE using OpenJDK Java runtime.

         ITS KNOWN TO HAVE PERFORMANCE AND GRAPHICS ISSUES!
         SWITCH TO THE ORACLE(SUN) JDK BEFORE REPORTING PROBLEMS!

NOTE:    If you have both Oracle (Sun) JDK and OpenJDK installed
         please validate either STUDIO_JDK, JDK_HOME, or JAVA_HOME
environment variable points to valid Oracle (Sun) JDK installation.
         See http://ow.ly/6TuKQ for more info on switching default JDK.

Press Enter to continue.


From martijnverburg at gmail.com  Sat Jun 15 08:01:55 2013
From: martijnverburg at gmail.com (Martijn Verburg)
Date: Sat, 15 Jun 2013 09:01:55 +0100
Subject: [jug-leaders] OpenJDK and Android Studio
In-Reply-To: <CAOeeQyoQeodMvkwwN_-aDV67DNfeaNv5Yd59kjrkfp5zkVewbw@mail.gmail.com>
References: <CAOeeQyoQeodMvkwwN_-aDV67DNfeaNv5Yd59kjrkfp5zkVewbw@mail.gmail.com>
Message-ID: <CAP7YuASDfQdHQR1_gvoAQ1oWFdfKG-uxbgYdvEpH1_2PGdm5tw@mail.gmail.com>

Hi Frans,

I believe this warning by Jetbrains is now no longer warranted. In
particular, the latest version of OpenJDK 7 has no major performance issues
(that I'm aware of) as compared to the Oracle binary.

Cheers,
Martijn


On 15 June 2013 07:00, Frans Thamura <frans at meruvian.org> wrote:

> An interesting news in I/O is Android Studio, run on JetBrain's platform.
>
> I try to run in Ubuntu, and got this message. and will jetbrain lead
> the graphics in OpenJDK backed by Google ?
>
>
> OpenJDK Runtime Environment (IcedTea6 1.12.3)
> (6b27-1.12.3-0ubuntu1~12.04.1)
> OpenJDK Server VM (build 20.0-b12, mixed mode)
> WARNING: You are launching the IDE using OpenJDK Java runtime.
>
>          ITS KNOWN TO HAVE PERFORMANCE AND GRAPHICS ISSUES!
>          SWITCH TO THE ORACLE(SUN) JDK BEFORE REPORTING PROBLEMS!
>
> NOTE:    If you have both Oracle (Sun) JDK and OpenJDK installed
>          please validate either STUDIO_JDK, JDK_HOME, or JAVA_HOME
> environment variable points to valid Oracle (Sun) JDK installation.
>          See http://ow.ly/6TuKQ for more info on switching default JDK.
>
> Press Enter to continue.
>


From neugens.limasoftware at gmail.com  Sat Jun 15 08:08:26 2013
From: neugens.limasoftware at gmail.com (Mario Torre)
Date: Sat, 15 Jun 2013 10:08:26 +0200
Subject: OpenJDK and Android Studio
In-Reply-To: <CAOeeQyoQeodMvkwwN_-aDV67DNfeaNv5Yd59kjrkfp5zkVewbw@mail.gmail.com>
References: <CAOeeQyoQeodMvkwwN_-aDV67DNfeaNv5Yd59kjrkfp5zkVewbw@mail.gmail.com>
Message-ID: <CAGUMyaT8NS-nuw2M_BXvEuj_E5Up9oZ1gN5iEhwNUMDXZOU9Kg@mail.gmail.com>

Did they ever say what exactly those problems are?

Would be nice to have at least a bug report from them rather than just
scaring messages.

I think this is probably a good reason to use a different IDE though.

Mario
Il giorno 15/giu/2013 08:10, "Frans Thamura" <frans at meruvian.org> ha
scritto:

> An interesting news in I/O is Android Studio, run on JetBrain's platform.
>
> I try to run in Ubuntu, and got this message. and will jetbrain lead
> the graphics in OpenJDK backed by Google ?
>
>
> OpenJDK Runtime Environment (IcedTea6 1.12.3)
> (6b27-1.12.3-0ubuntu1~12.04.1)
> OpenJDK Server VM (build 20.0-b12, mixed mode)
> WARNING: You are launching the IDE using OpenJDK Java runtime.
>
>          ITS KNOWN TO HAVE PERFORMANCE AND GRAPHICS ISSUES!
>          SWITCH TO THE ORACLE(SUN) JDK BEFORE REPORTING PROBLEMS!
>
> NOTE:    If you have both Oracle (Sun) JDK and OpenJDK installed
>          please validate either STUDIO_JDK, JDK_HOME, or JAVA_HOME
> environment variable points to valid Oracle (Sun) JDK installation.
>          See http://ow.ly/6TuKQ for more info on switching default JDK.
>
> Press Enter to continue.
>


From lists at selckin.be  Mon Jun 17 07:55:37 2013
From: lists at selckin.be (Thomas Matthijs)
Date: Mon, 17 Jun 2013 09:55:37 +0200
Subject: OpenJDK and Android Studio
In-Reply-To: <CAOeeQyoQeodMvkwwN_-aDV67DNfeaNv5Yd59kjrkfp5zkVewbw@mail.gmail.com>
References: <CAOeeQyoQeodMvkwwN_-aDV67DNfeaNv5Yd59kjrkfp5zkVewbw@mail.gmail.com>
Message-ID: <CABY_-Z5KDLBtCYYGqS2B_1TWyNqcer8J7Kq3DF6rzMMM-6bxXg@mail.gmail.com>

On Sat, Jun 15, 2013 at 8:00 AM, Frans Thamura <frans at meruvian.org> wrote:

> An interesting news in I/O is Android Studio, run on JetBrain's platform.
>
> I try to run in Ubuntu, and got this message. and will jetbrain lead
> the graphics in OpenJDK backed by Google ?
>
>
> OpenJDK Runtime Environment (IcedTea6 1.12.3)
> (6b27-1.12.3-0ubuntu1~12.04.1)
> OpenJDK Server VM (build 20.0-b12, mixed mode)
> WARNING: You are launching the IDE using OpenJDK Java runtime.
>
>          ITS KNOWN TO HAVE PERFORMANCE AND GRAPHICS ISSUES!
>          SWITCH TO THE ORACLE(SUN) JDK BEFORE REPORTING PROBLEMS!
>
> NOTE:    If you have both Oracle (Sun) JDK and OpenJDK installed
>          please validate either STUDIO_JDK, JDK_HOME, or JAVA_HOME
> environment variable points to valid Oracle (Sun) JDK installation.
>          See http://ow.ly/6TuKQ for more info on switching default JDK.
>
> Press Enter to continue.
>


openjdk 6 has many blocking issues/problems, i don't think you'll find many
people that recommend using it in production environments.

Using openjdk 7+ should be mostly fine


From alex.buckley at oracle.com  Mon Jun 17 17:39:30 2013
From: alex.buckley at oracle.com (Alex Buckley)
Date: Mon, 17 Jun 2013 10:39:30 -0700
Subject: Dynamic (i.e responding to methodNotFound) classes in Java
In-Reply-To: <CAERAJ+8c7wV3n3nfLL5EH_8Z49NA40jKcqrbBKGvcmZbOMSyCw@mail.gmail.com>
References: <CAERAJ+8RJcd=qZudfpywPVsfDVoCZd_mX8m5C4UbGLKf3t7Mnw@mail.gmail.com>
	<AE7DEEE1-B6D3-45B2-BD20-303E70E6740E@oracle.com>
	<CAERAJ+8c7wV3n3nfLL5EH_8Z49NA40jKcqrbBKGvcmZbOMSyCw@mail.gmail.com>
Message-ID: <51BF49D2.1030508@oracle.com>

While dynamic typing and dynamic method invocation did not make it into 
the Java language in SE 7, the concept of signature polymorphic methods 
did [1]. This allows a plain old virtual method invocation in the Java 
language to effect invocation of a dynamically typed method, via the 
java.lang.invoke.MethodHandle API and an upgraded invokevirtual 
instruction [2].

Alex

[1] http://docs.oracle.com/javase/specs/jls/se7/html/jls-15.html#jls-15.12.3
[2] 
http://docs.oracle.com/javase/specs/jvms/se7/html/jvms-6.html#jvms-6.5.invokevirtual

On 6/13/2013 9:16 PM, Behrang Saeedzadeh wrote:
> Thanks for the clarification John. I also believe this was inconsistent
> with Java's philosophy, but I was just wondering what happened to that
> stuff.
>
> Cheers,
> Behrang Saeedzadeh
> http://www.behrang.org
>
>
> On Fri, Jun 14, 2013 at 12:05 PM, John Rose <john.r.rose at oracle.com> wrote:
>
>> On Jun 13, 2013, at 6:26 PM, Behrang Saeedzadeh <behrangsa at gmail.com>
>> wrote:
>>
>>> Hi,
>>>
>>> A couple of years ago I downloaded an experimental build of JDK with
>>> invokedynamic support and it contained a class (DynamicObject?) that any
>>> method could be invoked on its subclasses without any compile time
>> errors.
>>>
>>> Does this class still exist? I can't find it anymore in the API docs.
>>
>> No.  There were partial prototypes in this direction as part of JSR 292,
>> but they were abandoned in 2009.  Here is a proposal from that time frame:
>>    https://wiki.openjdk.java.net/display/mlvm/DynamicJava
>>
>> Nothing like this exists or was built in any usable way.
>>
>> Untyped or "duck typed" invocation of objects can be done easily enough
>> with third-party libraries, or with reflection, or using a dynamic language
>> like JavaScript or JRuby or ${your_favorite_jvm_language}.
>>
>> In my opinion, Java the language is unlikely to support such a thing in
>> the near future, since there are many reasonable alternatives.
>>
>> ? John


From adomurad at redhat.com  Fri Jun 21 18:25:13 2013
From: adomurad at redhat.com (Adam Domurad)
Date: Fri, 21 Jun 2013 18:25:13 +0000 (UTC)
Subject: Oracle's examples do not work with icedtea-web
References: <CAGUMyaR_mr-2X7HkQQJ4ncW76PfD0-iS3aa8fJk_2DBbqTiPZw@mail.gmail.com>
	<511AAC93.3090509@oracle.com>
Message-ID: <loom.20130621T201435-875@post.gmane.org>

Donald Smith <donald.smith at ...> writes:

> 
> Good catch.  I've sent this to the tutorials pages contact.

Hi, any word on this ? 

Recently, we added a tagsoup based parser to attempt to handle invalid XML
in icedtea-web:
http://icedtea.classpath.org/hg/icedtea-web?cmd=changeset;node=a236aa5f729b

Unfortunately, some of the examples here continue to not work. 
I think it would be nice to update these examples to be valid XML, 
it would save us the trouble of trying to parse yet more invalid XML.

Thanks & happy hacking,
-Adam




From donald.smith at oracle.com  Fri Jun 21 18:38:27 2013
From: donald.smith at oracle.com (Donald Smith)
Date: Fri, 21 Jun 2013 14:38:27 -0400
Subject: Oracle's examples do not work with icedtea-web
In-Reply-To: <loom.20130621T201435-875@post.gmane.org>
References: <CAGUMyaR_mr-2X7HkQQJ4ncW76PfD0-iS3aa8fJk_2DBbqTiPZw@mail.gmail.com>
	<511AAC93.3090509@oracle.com>
	<loom.20130621T201435-875@post.gmane.org>
Message-ID: <51C49DA3.7080306@oracle.com>

Hm, odd - I just pinged the team again.  I did get an ACK, so I thought 
it was done already -- sorry about that.

  - Don


On 21/06/2013 2:25 PM, Adam Domurad wrote:
> Donald Smith <donald.smith at ...> writes:
>
>> Good catch.  I've sent this to the tutorials pages contact.
> Hi, any word on this ?
>
> Recently, we added a tagsoup based parser to attempt to handle invalid XML
> in icedtea-web:
> http://icedtea.classpath.org/hg/icedtea-web?cmd=changeset;node=a236aa5f729b
>
> Unfortunately, some of the examples here continue to not work.
> I think it would be nice to update these examples to be valid XML,
> it would save us the trouble of trying to parse yet more invalid XML.
>
> Thanks & happy hacking,
> -Adam
>
>



From adomurad at redhat.com  Fri Jun 21 19:06:55 2013
From: adomurad at redhat.com (Adam Domurad)
Date: Fri, 21 Jun 2013 15:06:55 -0400
Subject: Oracle's examples do not work with icedtea-web
In-Reply-To: <51C49DA3.7080306@oracle.com>
References: <CAGUMyaR_mr-2X7HkQQJ4ncW76PfD0-iS3aa8fJk_2DBbqTiPZw@mail.gmail.com>
	<511AAC93.3090509@oracle.com>
	<loom.20130621T201435-875@post.gmane.org>
	<51C49DA3.7080306@oracle.com>
Message-ID: <51C4A44F.6020407@redhat.com>

On 06/21/2013 02:38 PM, Donald Smith wrote:
> Hm, odd - I just pinged the team again.  I did get an ACK, so I thought
> it was done already -- sorry about that.
>
>   - Don
>
>
> On 21/06/2013 2:25 PM, Adam Domurad wrote:
>> Donald Smith <donald.smith at ...> writes:
>>
>>> Good catch.  I've sent this to the tutorials pages contact.
>> Hi, any word on this ?
>>
>> Recently, we added a tagsoup based parser to attempt to handle invalid
>> XML
>> in icedtea-web:
>> http://icedtea.classpath.org/hg/icedtea-web?cmd=changeset;node=a236aa5f729b
>>
>>
>> Unfortunately, some of the examples here continue to not work.
>> I think it would be nice to update these examples to be valid XML,
>> it would save us the trouble of trying to parse yet more invalid XML.
>>
>> Thanks & happy hacking,
>> -Adam
>>
>>
>

Apologies, I had checked not too long ago and they were still not 
working. They seem to be working now -- thank you!

Happy hacking,
-Adam


From donald.smith at oracle.com  Fri Jun 21 19:13:34 2013
From: donald.smith at oracle.com (Donald Smith)
Date: Fri, 21 Jun 2013 15:13:34 -0400
Subject: Oracle's examples do not work with icedtea-web
In-Reply-To: <51C4A44F.6020407@redhat.com>
References: <CAGUMyaR_mr-2X7HkQQJ4ncW76PfD0-iS3aa8fJk_2DBbqTiPZw@mail.gmail.com>
	<511AAC93.3090509@oracle.com>
	<loom.20130621T201435-875@post.gmane.org>
	<51C49DA3.7080306@oracle.com> <51C4A44F.6020407@redhat.com>
Message-ID: <51C4A5DE.7030608@oracle.com>

Ok, it was either pushed with 7u25 content update, or maybe just a 
caching hiccup.

Glad it's working!

  - Don


On 21/06/2013 3:06 PM, Adam Domurad wrote:
> On 06/21/2013 02:38 PM, Donald Smith wrote:
>> Hm, odd - I just pinged the team again.  I did get an ACK, so I thought
>> it was done already -- sorry about that.
>>
>>   - Don
>>
>>
>> On 21/06/2013 2:25 PM, Adam Domurad wrote:
>>> Donald Smith <donald.smith at ...> writes:
>>>
>>>> Good catch.  I've sent this to the tutorials pages contact.
>>> Hi, any word on this ?
>>>
>>> Recently, we added a tagsoup based parser to attempt to handle invalid
>>> XML
>>> in icedtea-web:
>>> http://icedtea.classpath.org/hg/icedtea-web?cmd=changeset;node=a236aa5f729b 
>>>
>>>
>>>
>>> Unfortunately, some of the examples here continue to not work.
>>> I think it would be nice to update these examples to be valid XML,
>>> it would save us the trouble of trying to parse yet more invalid XML.
>>>
>>> Thanks & happy hacking,
>>> -Adam
>>>
>>>
>>
>
> Apologies, I had checked not too long ago and they were still not 
> working. They seem to be working now -- thank you!
>
> Happy hacking,
> -Adam



From jonathan.gibbons at oracle.com  Sat Jun 22 02:24:11 2013
From: jonathan.gibbons at oracle.com (Jonathan Gibbons)
Date: Fri, 21 Jun 2013 19:24:11 -0700
Subject: New Code Tools repo: friday-stats
Message-ID: <51C50ACB.7070701@oracle.com>

I am pleased to announce that we have opened up a new repo in the Code 
Tools project to host small utility programs for analyzing OpenJDK.

For more details, see
http://openjdk.java.net/projects/code-tools/friday-stats/

-- Jon