Which javas? (Was java / iceweasel)
 

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In my box the command "update-alternatives --config java" returns the
following:

There are 3 alternatives which provide `java'.

Selection Alternative
- -----------------------------------------------
1 /usr/bin/gij-4.3
*+ 2 /usr/lib/jvm/java-gcj/jre/bin/java
3 /usr/lib/jvm/java-6-sun/jre/bin/java

What is the difference among the three?

Ken Heard
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Which javas? (Was java / iceweasel)
 

On Tue, 17 Nov 2009 10:16:24 -0500, Ken Heard wrote:

> In my box the command "update-alternatives --config java" returns the
> following:
>
> There are 3 alternatives which provide `java'.
>
> Selection Alternative
> - -----------------------------------------------
> 1 /usr/bin/gij-4.3
> *+ 2 /usr/lib/jvm/java-gcj/jre/bin/java
> 3 /usr/lib/jvm/java-6-sun/jre/bin/java
>
> What is the difference among the three?

- The first one, I dunno :-?

...oh, it's an intrepreter:

http://en.wikipedia.org/wiki/GNU_Interpreter_for_Java

- The second one is an open version of a Java compiler.

- The third one is the Sun's JRE java version. I find this is the best
(stable and compatible) version.

http://en.wikipedia.org/wiki/Java_(programming_language)
http://en.wikipedia.org/wiki/Free_Java_implementations

Greetings,

--
Camaleón


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Which javas? (Was java / iceweasel)
 

On Tue, Nov 17, 2009 at 05:43:13PM +0000, Camale?n wrote:
> On Tue, 17 Nov 2009 10:16:24 -0500, Ken Heard wrote:
>
> > In my box the command "update-alternatives --config java" returns the
> > following:
> >
> > There are 3 alternatives which provide `java'.
> >
> > Selection Alternative
> > - -----------------------------------------------
> > 1 /usr/bin/gij-4.3
> > *+ 2 /usr/lib/jvm/java-gcj/jre/bin/java
> > 3 /usr/lib/jvm/java-6-sun/jre/bin/java

I think the main issue is with the libraries and how complete classpath
is compared to the sun one. I believe (last time I looked), that a
majority of the standard java library from sun has been opensourced, but
some small part hasn't.

gij + gcj should produce runnable code from java source, you will see a
lot of deb java package with -gcj helper packages - eclipse and
openoffice.

I have been stung by a few quirky instances where gij/gcj hasn't worked,
so I stick with the sun implementations.

your milage may vary

alex

> >
> > What is the difference among the three?
>
> - The first one, I dunno :-?
>
> ...oh, it's an intrepreter:
>
> http://en.wikipedia.org/wiki/GNU_Interpreter_for_Java
>
> - The second one is an open version of a Java compiler.
>
> - The third one is the Sun's JRE java version. I find this is the best
> (stable and compatible) version.
>
> http://en.wikipedia.org/wiki/Java_(programming_language)
> http://en.wikipedia.org/wiki/Free_Java_implementations
>
> Greetings,
>

--
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- George W. Bush
08/13/2002
Waco, TX

Which javas? (Was java / iceweasel)
 

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Alex Samad wrote:
> On Tue, Nov 17, 2009 at 05:43:13PM +0000, Camale?n wrote:
>> On Tue, 17 Nov 2009 10:16:24 -0500, Ken Heard wrote:
>>
>>> In my box the command "update-alternatives --config java" returns the
>>> following:
>>>
>>> There are 3 alternatives which provide `java'.
>>>
>>> Selection Alternative
>>> - -----------------------------------------------
>>> 1 /usr/bin/gij-4.3
>>> *+ 2 /usr/lib/jvm/java-gcj/jre/bin/java
>>> 3 /usr/lib/jvm/java-6-sun/jre/bin/java
>
> I think the main issue is with the libraries and how complete classpath
> is compared to the sun one. I believe (last time I looked), that a
> majority of the standard java library from sun has been opensourced, but
> some small part hasn't.
>
> gij + gcj should produce runnable code from java source, you will see a
> lot of deb java package with -gcj helper packages - eclipse and
> openoffice.
>
> I have been stung by a few quirky instances where gij/gcj hasn't worked,
> so I stick with the sun implementations.
>
> your milage may vary

On Camaleón's advice in alternatives I changed my default java to the
sun-java6-jre version. In your post you also indicated that that
version is the best one to use. I have consequently purged the packages
- -- including the chains of packages on which they depended thereby
orphaned -- which provided the other two. According to your post I
should not really have any trouble for having done so,

Regards, Ken
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Which javas? (Was java / iceweasel)
 

On Tue, Nov 17, 2009 at 14:33 -0500, Ken Heard wrote:
>
> On Camaleón's advice in alternatives I changed my default java to the
> sun-java6-jre version. In your post you also indicated that that
> version is the best one to use. I have consequently purged the packages

You might want to consider installing openjdk-6-jre, which is the open
source variant of SUN's JRE. For more information see [1], but just to
give you a little teaser:

"A few of us have been discussing the removal of sun-java6. It is
non-free, orphaned, buggy (including security bugs), and can generally
be replaced by openjdk"

[1] http://lists.debian.org/debian-devel/2009/10/msg00140.html
--
.'`. Wolodja Wentland <wentland@cl.uni-heidelberg.de>
: :' :
`. `'` 4096R/CAF14EFC
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Which javas? (Was java / iceweasel)
 

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Wolodja Wentland wrote:

> On Tue, Nov 17, 2009 at 14:33 -0500, Ken Heard wrote:
>> On Camale�n's advice in alternatives I changed my default java to the
>> sun-java6-jre version. In your post you also indicated that that
>> version is the best one to use. I have consequently purged the packages
>
> You might want to consider installing openjdk-6-jre, which is the open
> source variant of SUN's JRE. For more information see [1], but just to
> give you a little teaser:
>
> "A few of us have been discussing the removal of sun-java6. It is
> non-free, orphaned, buggy (including security bugs), and can generally
> be replaced by openjdk"
>
> [1] http://lists.debian.org/debian-devel/2009/10/msg00140.html

I looked at that thread. Since I am not on the developer list I did not
see it when it first appeared at the beginning of October.

In any event I installed package icedtea-gcjwebplugin (Lenny), which
caused openjdk-6-jre and dependencies to be installed as well. (Also
installed were 10 ttg font packages for various Indian languages which I
later purged.)

I then ran "update-alternatives --config java", which now gave me the
choice of either /usr/lib/jvm/java-6-sun/jre/bin/java or
/usr/lib/jvm/java-6-openjdk/jre/bin/java. I changed the default from
java-6-sun to java-6-openjdk.

Finally I opened OpenOffice. The java options window there also showed
both java-6-sun and java-6-openjdk. I switched from the former to the
latter.

If I have problems I will report back. Thanks for the tip.

Regards, Ken Heard

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Which javas? (Was java / iceweasel)
 

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Another java question.

While I have installed icedtea-gcjwebplugin (Lenny),openjdk-6-jre and
dependencies I note that the java website has available a Linux version
of java, jre1.6_17. While this version is proprietary and likely the
latest, is it nevertheless dependable enough to use with Debian Lenny --
OR am I better off using openjdk-6-jre with icedtea-gcjwebplugin?

jre1.6.17 does have disadvantages that it does not appear in the java
alternatives list, and I presumably have to make a symbolic link to plug
it in to my browsers. If I were to use this version, which plugin should
I use, the ns07 or the ns07-gcc?

Ken Heard
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Which javas? (Was java / iceweasel)
 

On Wed, 18 Nov 2009 15:52:23 -0500, Ken Heard wrote:

> Another java question.

It seems you are vey interested in Java :-)

> While I have installed icedtea-gcjwebplugin (Lenny),openjdk-6-jre and
> dependencies I note that the java website has available a Linux version
> of java, jre1.6_17.

Yes, it's the Sun's package. At Sun's web page you will always find the
most updated java version available.

> While this version is proprietary and likely the
> latest, is it nevertheless dependable enough to use with Debian Lenny --
> OR am I better off using openjdk-6-jre with icedtea-gcjwebplugin?

Well, that depends on your specific needs.

For example, I am using a fax program that works better with the Sun's
JRE Java. Also, there are some online banks that requiere the Sun's java
version in order to make online operations.

But if you have no special "java needs", then you are fine with the open
version.

> jre1.6.17 does have disadvantages that it does not appear in the java
> alternatives list, and I presumably have to make a symbolic link to plug
> it in to my browsers. If I were to use this version, which plugin should
> I use, the ns07 or the ns07-gcc?

I would stay with your current setup. In the event you need any other
java jre version or something does not work for you, just use the "update-
lateratives" command to set as default the Sun's java you already have
installed in your system.

Greetings,

--
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Which javas? (Was java / iceweasel)
 

On Wed, Nov 18, 2009 at 10:21:20PM +0000, Camaleón wrote:
> On Wed, 18 Nov 2009 15:52:23 -0500, Ken Heard wrote:
>

[snip]

>
> For example, I am using a fax program that works better with the Sun's
> JRE Java. Also, there are some online banks that requiere the Sun's java
> version in order to make online operations.
>
> But if you have no special "java needs", then you are fine with the open
> version.

I have (previously) found a few web site where the openjre plugin
doesn't work


hope this isn't going to be one of those occasions where the dev's say
'well it works most of the time, so thats good enough' I haven't had any
problems with the sun plugin it work each and every time.

>

[snip]

> Greetings,
>

--
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- George W. Bush
01/08/2003
Washington, DC

Which javas? (Was java / iceweasel)
 

On Thu, Nov 19, 2009 at 10:53:43AM +1100, Alex Samad wrote:
> On Wed, Nov 18, 2009 at 10:21:20PM +0000, Camaleón wrote:
> > On Wed, 18 Nov 2009 15:52:23 -0500, Ken Heard wrote:
> >
>
> [snip]
>
> >
> > For example, I am using a fax program that works better with the Sun's
> > JRE Java. Also, there are some online banks that requiere the Sun's java
> > version in order to make online operations.
> >
> > But if you have no special "java needs", then you are fine with the open
> > version.
>
> I have (previously) found a few web site where the openjre plugin
> doesn't work
>
>
> hope this isn't going to be one of those occasions where the dev's say
> 'well it works most of the time, so thats good enough' I haven't had any
> problems with the sun plugin it work each and every time.

I thought I would try the icedtea plugin but it failed - it was a
internet trading site.....

>
> >
>
> [snip]
>
> > Greetings,
> >
>



--
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- George W. Bush
08/13/2001
Crawford, TX