New JDK 7 Feature: Support for Dynamically Typed Languages in the JVM (opens in new tab)

(java.sun.com)

87 pointsdavatk16y ago15 comments

15 comments

11 comments · 7 top-level

c00p3r16y ago· 2 in thread

What is JDK 7? Yet another marketing buzzword? Would it happen to run on emerged ARM-based platforms? Netbooks? iPhone? Android? Symbian? Whatever?

alexgartrell16y ago

Java Development Kit, let's you compile Java code to bytecode (As opposed to the JRE, Java Runtime Environment, which runs it).

It's cross platform and not a marketing buzzword at all.

Have you done this before?

c00p3r16y ago

1. cross which platform?

2. where I can get JRE for linux on ARM?

1 more reply

mahmud16y ago· 2 in thread

OT:

I knew it!

http://news.ycombinator.com/item?id=727427

JRuby guys quit on Oracle and went with EngineYard. Yeah, because they knew they only sponsored the JSR for dynamic languages. I too would quit my day job if Sun was customizing the JVM to support my compiler better.

[Edit: s/ibm/oracle/]

dminor16y ago

They were employed by Sun, not IBM, and already worked on JRuby full time. I think this was more about integration into the Ruby community as well as getting a good JRuby deployment option in place at EY, as well as uncertainty over Oracle's acquisition of Sun.

Edit -- Charlie Nutter on jruby-user: "The primary reason for leaving was the high level of uncertainty involved."

mahmud16y ago

Good catch, but still. If they knew Sun had a JSR waiting to leave the door that would essentially put their pet project on the map, it makes perfect sense to go with a more cutting-edge vendor who would care for it, maybe negotiating better pay, or even waiting another year before launching your own support-shop.

2 more replies

dminor16y ago

Charlie Nutter of JRuby did a (very long) post about invokedynamic on his blog awhile back: http://blog.headius.com/2008/09/first-taste-of-invokedynamic...

zmimon16y ago

Since this uses a new bytecode on the JVM I wonder how backwards compatibility is going to be handled?

I hope we don't see a painful period where people stuck with old JDKs (Mac users, that means you) are going to be unable to use the newest versions of dynamic languages. Even just having to distribute separate binaries for pre-JDK7 runtimes will be an annoyance that people in the java community have not experienced for a long time.

acangiano16y ago

This should be the Java equivalent of the Dynamic Language Runtime (DLR) built on top of the CLR.

jongraehl16y ago

How about continuations and TCO while we're at it?

jherdman16y ago

Thank god for Instapaper (http://www.instapaper.com)! That's one long article that will make for fine, fine nerdy subway reading.

j / k navigate · click thread line to collapse

15 comments

11 comments · 7 top-level

c00p3r16y ago· 2 in thread

What is JDK 7? Yet another marketing buzzword? Would it happen to run on emerged ARM-based platforms? Netbooks? iPhone? Android? Symbian? Whatever?

alexgartrell16y ago

Java Development Kit, let's you compile Java code to bytecode (As opposed to the JRE, Java Runtime Environment, which runs it).

It's cross platform and not a marketing buzzword at all.

Have you done this before?

c00p3r16y ago

1. cross which platform?

2. where I can get JRE for linux on ARM?

1 more reply

mahmud16y ago· 2 in thread

OT:

I knew it!

http://news.ycombinator.com/item?id=727427

[Edit: s/ibm/oracle/]

dminor16y ago

Edit -- Charlie Nutter on jruby-user: "The primary reason for leaving was the high level of uncertainty involved."

mahmud16y ago

2 more replies

dminor16y ago

Charlie Nutter of JRuby did a (very long) post about invokedynamic on his blog awhile back: http://blog.headius.com/2008/09/first-taste-of-invokedynamic...

zmimon16y ago

Since this uses a new bytecode on the JVM I wonder how backwards compatibility is going to be handled?

acangiano16y ago

This should be the Java equivalent of the Dynamic Language Runtime (DLR) built on top of the CLR.

jongraehl16y ago

How about continuations and TCO while we're at it?

jherdman16y ago

Thank god for Instapaper (http://www.instapaper.com)! That's one long article that will make for fine, fine nerdy subway reading.

j / k navigate · click thread line to collapse