Official Java Classes

[Dirk Bruere at NeoPax]

Just curious - does Sun write them in Java?

--
Dirk

http://www.transcendence.me.uk/ - Transcendence UK
http://www.theconsensus.org/ - A UK political party
http://www.onetribe.me.uk/wordpress/?cat=5 - Our podcasts on weird stuff

 

[Mike Schilling]

Almost all of them. See the src.jar that comes with the JDK.

 

[Joshua Cranmer]

Just curious - does Sun write them in Java?

All Java classes use the JVM bytecode; some methods have native
implementations. Sun's classes are all written in Java, as is
practically all of its tools (javac is pretty much a tiny C shell around
executing a certain Java class).

Some classes have distinctly more native components, though, especially
those in java.lang and its friendly subpackages.

 

[Lew]

(Please put your point in the body of the message, not only the subject line.)

Just curious - does Sun write them [official Java classes] in Java?

Almost all of them. See the src.jar that comes with the JDK.

It's "src.zip" here. (Linux distro, Sun JDK 6u14.)

All Java classes use the JVM bytecode; some methods have native
implementations. Sun's classes are all written in Java, as is
practically all of its tools (javac is pretty much a tiny C shell around
executing a certain Java class).

Some classes have distinctly more native components, though, especially
those in java.lang and its friendly subpackages.

Unfortunately I have yet to see source for those native methods.

 

[Mike Schilling]

(Please put your point in the body of the message, not only the
subject line.)

Just curious - does Sun write them [official Java classes] in
Java?

Almost all of them. See the src.jar that comes with the JDK.

It's "src.zip" here. (Linux distro, Sun JDK 6u14.)

Yeah, here too.

Unfortunately I have yet to see source for those native methods.

Here's one:

http://hg.openjdk.java.net/jdk7/jdk7/jdk/file/0a5b87833562/src/share/native/java/lang/Class.c

 

[Arne Vajhøj]

Unfortunately I have yet to see source for those native methods.

http://download.java.net/openjdk/jdk6/promoted/b16/openjdk-6-src-b16-24_apr_2009.tar.gz
http://www.java.net/download/openjdk/jdk7/promoted/b63/openjdk-7-ea-src-b63-02_jul_2009.zip

should have it all..

Arne

 

[Arne Vajhøj]

http://download.java.net/openjdk/jdk6/promoted/b16/openjdk-6-src-b16-24_apr_2009.tar.gz

http://www.java.net/download/openjdk/jdk7/promoted/b63/openjdk-7-ea-src-b63-02_jul_2009.zip

should have it all..

A few pieces of code may have been replaced comparing with the
official SUN code (if the C code in the official SUN code were
impossible to release under the GPL license).

Arne

 

[Roedy Green]

Just curious - does Sun write them in Java?

Most of it you can look at in src.jar written in Java. The
platform-specific stuff (the native classes) have to be written in
C/C++. You can see that too. see http://mindprod.com/jgloss/jdk.html
for the link.
--
Roedy Green Canadian Mind Products
http://mindprod.com

"For reason that have a lot to do with US Government bureaucracy, we settled on the one issue everyone could agree on, which was weapons of mass destruction."
~ Paul Wolfowitz 2003-06, explaining how the Bush administration sold the Iraq war to a gullible public.

 

[Arne Vajhøj]

Isn't it there ?

http://download.java.net/jdk6/6u3/

It is available under the "Java Research License" which is not very
restrictive.

Is this the SUN version as opposed to the OpenJDK version at:

http://download.java.net/openjdk/jdk6/

or ?

Arne

 

[Lew]

According to Lew:

Isn't it there ?

http://download.java.net/jdk6/6u3/

Why do you point to update 3 and not update 14? I went ahead and downloaded
the update 14 version.

Anyway, I have been getting my source.zip in the JDK, which does not include
the native methods.

This source build is a good reference, though, thanks. It's all there, I
suppose, but scattered all over. I'll peruse.

 

[Arne Vajhøj]

According to Lew:



Why do you point to update 3 and not update 14? I went ahead and
downloaded the update 14 version.

Anyway, I have been getting my source.zip in the JDK, which does not
include the native methods.

This source build is a good reference, though, thanks. It's all there,
I suppose, but scattered all over. I'll peruse.

The src.zip has been there for ages for reference purposes.

Publicizing all the stuff needed to build is a newer thing.

Arne