Why can't I select the Sun Java VM ?

[linux guy]

# alternatives --config java

There are 2 programs which provide 'java'.

Selection    Command
-----------------------------------------------
*  1           /usr/lib/jvm/jre-1.6.0-openjdk/bin/java
 + 2           /usr/lib/jvm/jre-1.5.0-gcj/bin/java

So it thinks I have 2 versions of Java.

Here is the first:

# java -version
java version "1.6.0_0"
IcedTea6 1.4 (6b12-Fedora-10) Runtime Environment (build 1.6.0_0-b12)
OpenJDK Server VM (build 10.0-b19, mixed mode)

Here is the second:

# java -version
java version "1.5.0"
gij (GNU libgcj) version 4.3.2 20081105 (Red Hat 4.3.2-7)

However, I actually have 3 versions of Java, because I installed the Sun
Java from a Sun rpm:

# rpm -ql jre                                    
/usr/java/jre1.5.0_15/CHANGES                                        
/usr/java/jre1.5.0_15/COPYRIGHT                                      
/usr/java/jre1.5.0_15/LICENSE                                        
/usr/java/jre1.5.0_15/README                                         
/usr/java/jre1.5.0_15/THIRDPARTYLICENSEREADME.txt                    
/usr/java/jre1.5.0_15/Welcome.html                                   
/usr/java/jre1.5.0_15/bin                                            
/usr/java/jre1.5.0_15/bin/ControlPanel                               
/usr/java/jre1.5.0_15/bin/java

If I test it it works fine.

# /usr/java/jre1.5.0_15/bin/java -version
java version "1.5.0_15"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_15-b04)
Java HotSpot(TM) Server VM (build 1.5.0_15-b04, mixed mode)

So I move it to /usr/lib/jvm and run again:

alternatives --config java

There are 2 programs which provide 'java'.

Selection    Command
-----------------------------------------------
*+ 1           /usr/lib/jvm/jre-1.6.0-openjdk/bin/java
   2           /usr/lib/jvm/jre-1.5.0-gcj/bin/java

The Sun Java doesn't show up.

/usr/lib/jvm looks like this:

ls -al
total 204
drwxr-xr-x   5 root root   4096 .
drwxr-xr-x 183 root root 139264 ..
drwxr-xr-x   3 root root   4096 java-1.5.0-gcj-1.5.0.0
drwxr-xr-x   3 root root   4096 java-1.6.0-openjdk-1.6.0.0
lrwxrwxrwx   1 root root     21 jre -> /etc/alternatives/jre
lrwxrwxrwx   1 root root     27 jre-1.5.0 -> /etc/alternatives/jre_1.5.0
drwxr-xr-x   7 root root   4096 jre1.5.0_15
lrwxrwxrwx   1 root root     26 jre-1.5.0-gcj ->
java-1.5.0-gcj-1.5.0.0/jre
lrwxrwxrwx   1 root root     27 jre-1.6.0 -> /etc/alternatives/jre_1.6.0
lrwxrwxrwx   1 root root     30 jre-1.6.0-openjdk ->
java-1.6.0-openjdk-1.6.0.0/jre
lrwxrwxrwx   1 root root     25 jre-gcj -> /etc/alternatives/jre_gcj
lrwxrwxrwx   1 root root     29 jre-openjdk
-> /etc/alternatives/jre_openjdk

How do I get the Sun java to be the default Java, without doing a 24
step build that Googling finds ?

Thanks

[Tom Horsley]

On Sun, 30 Nov 2008 09:40:34 -0500
Linuxguy123  wrote:
> How do I get the Sun java to be the default Java, without doing a 24
> step build that Googling finds ?

Somewhere out in the world is a package that actually adds
the sun java to the alternatives system (the sun packages
do not do that, which is why it doesn't show up).

Where this package is located is another question. I remember
seeing it once, but I forget where that was.

http://rabbitbrush.frazmtn.com/sun-java-on-F8.html

is a page I just found with a quick google search, but it
doesn't look like the one I'm remembering :-).

[Deepak Bhole]

* Tom Horsley  [2008-11-30 11:54]:
> On Sun, 30 Nov 2008 09:40:34 -0500
> Linuxguy123  wrote:
> > How do I get the Sun java to be the default Java, without doing a 24
> > step build that Googling finds ?
>
> Somewhere out in the world is a package that actually adds
> the sun java to the alternatives system (the sun packages
> do not do that, which is why it doesn't show up).
>
> Where this package is located is another question. I remember
> seeing it once, but I forget where that was.
>
> http://rabbitbrush.frazmtn.com/sun-java-on-F8.html
>
> is a page I just found with a quick google search, but it
> doesn't look like the one I'm remembering :-).

I believe you're thinking of java-*-sun-compat packages from JPackage
(mentioned on that page). The compat package depends on the RPM from
Sun, and sets up the proper alternatives. Unfortunately, they haven't 
been updated for a while:

http://mirrors.dotsrc.org/jpackage/1.7/generic/non-free/RPMS/

Deepak
> -- 
> fedora-list mailing list
> [e-mail]
> To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
> Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines

[Marcelo Magno T. Sales]

Em Dom 30 Nov 2008, Linuxguy123 escreveu:
> # alternatives --config java
>
> There are 2 programs which provide 'java'.
> Selection    Command
> 1           /usr/lib/jvm/jre-1.6.0-openjdk/bin/java
> 2           /usr/lib/jvm/jre-1.5.0-gcj/bin/java
>
> So it thinks I have 2 versions of Java.
>
> Here is the first:
>
> # java -version
> java version "1.6.0_0"
> IcedTea6 1.4 (6b12-Fedora-10) Runtime Environment (build 1.6.0_0-b12)
> OpenJDK Server VM (build 10.0-b19, mixed mode)
>
> Here is the second:
>
> # java -version
> java version "1.5.0"
> gij (GNU libgcj) version 4.3.2 20081105 (Red Hat 4.3.2-7)
>
> However, I actually have 3 versions of Java, because I installed the
> Sun Java from a Sun rpm:
>
> # rpm -ql jre
> /usr/java/jre1.5.0_15/CHANGES
> /usr/java/jre1.5.0_15/COPYRIGHT
> /usr/java/jre1.5.0_15/LICENSE
> /usr/java/jre1.5.0_15/README
> /usr/java/jre1.5.0_15/THIRDPARTYLICENSEREADME.txt
> /usr/java/jre1.5.0_15/Welcome.html
> /usr/java/jre1.5.0_15/bin
> /usr/java/jre1.5.0_15/bin/ControlPanel
> /usr/java/jre1.5.0_15/bin/java
>
> If I test it it works fine.
>
> # /usr/java/jre1.5.0_15/bin/java -version
> java version "1.5.0_15"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_15-b04)
> Java HotSpot(TM) Server VM (build 1.5.0_15-b04, mixed mode)
>
> So I move it to /usr/lib/jvm and run again:
>
> alternatives --config java
>
> There are 2 programs which provide 'java'.
> Selection    Command
>
> *+ 1           /usr/lib/jvm/jre-1.6.0-openjdk/bin/java
>    2           /usr/lib/jvm/jre-1.5.0-gcj/bin/java
>
> The Sun Java doesn't show up.
>
> /usr/lib/jvm looks like this:
>
> ls -al
> total 204
> drwxr-xr-x   5 root root   4096 .
> drwxr-xr-x 183 root root 139264 ..
> drwxr-xr-x   3 root root   4096 java-1.5.0-gcj-1.5.0.0
> drwxr-xr-x   3 root root   4096 java-1.6.0-openjdk-1.6.0.0
> lrwxrwxrwx   1 root root     21 jre -> /etc/alternatives/jre
> lrwxrwxrwx   1 root root     27 jre-1.5.0 ->
> /etc/alternatives/jre_1.5.0 drwxr-xr-x   7 root root   4096
> jre1.5.0_15
> lrwxrwxrwx   1 root root     26 jre-1.5.0-gcj ->
> java-1.5.0-gcj-1.5.0.0/jre
> lrwxrwxrwx   1 root root     27 jre-1.6.0 ->
> /etc/alternatives/jre_1.6.0 lrwxrwxrwx   1 root root     30
> jre-1.6.0-openjdk ->
> java-1.6.0-openjdk-1.6.0.0/jre
> lrwxrwxrwx   1 root root     25 jre-gcj -> /etc/alternatives/jre_gcj
> lrwxrwxrwx   1 root root     29 jre-openjdk
> -> /etc/alternatives/jre_openjdk
>
> How do I get the Sun java to be the default Java, without doing a 24
> step build that Googling finds ?

You must register the new java alternative with the alternatives command 
first. Just type in as root in a terminal window:
alternatives --­­install /usr/bin/java java /opt/jre1.6.0/bin/java 3
alternatives --config java

And select the one you want to be the default. Replace 
"/opt/jre1.6.0/bin/" with the path where you have decompressed Sun's 
java binaries. 
I've read a long time ago that we shouldn't install Sun's Java RPM in 
Fedora, because it would overwrite some files of GCJ. When you update 
GCJ the next time, it will overwrite back the Sun's files. I don't know 
for sure if this was correct or if it is still the case but maybe, just 
to be safe, you should download the non-rpm package from Sun and 
decompress it manually in /opt or other directory you like.
If any one knows if it's still not recommended to install Sun's Java RPM 
package, please let us know.

[]'s
Marcelo

[linux guy]

On Sun, 2008-11-30 at 14:06 -0300, Marcelo Magno T. Sales wrote:
> Em Dom 30 Nov 2008, Linuxguy123 escreveu:
> > # alternatives --config java
> >
> > There are 2 programs which provide 'java'.
> > Selection    Command
> > 1           /usr/lib/jvm/jre-1.6.0-openjdk/bin/java
> > 2           /usr/lib/jvm/jre-1.5.0-gcj/bin/java
> >
> > So it thinks I have 2 versions of Java.
> >
> > Here is the first:
> >
> > # java -version
> > java version "1.6.0_0"
> > IcedTea6 1.4 (6b12-Fedora-10) Runtime Environment (build 1.6.0_0-b12)
> > OpenJDK Server VM (build 10.0-b19, mixed mode)
> >
> > Here is the second:
> >
> > # java -version
> > java version "1.5.0"
> > gij (GNU libgcj) version 4.3.2 20081105 (Red Hat 4.3.2-7)
> >
> > However, I actually have 3 versions of Java, because I installed the
> > Sun Java from a Sun rpm:
> >
> > # rpm -ql jre
> > /usr/java/jre1.5.0_15/CHANGES
> > /usr/java/jre1.5.0_15/COPYRIGHT
> > /usr/java/jre1.5.0_15/LICENSE
> > /usr/java/jre1.5.0_15/README
> > /usr/java/jre1.5.0_15/THIRDPARTYLICENSEREADME.txt
> > /usr/java/jre1.5.0_15/Welcome.html
> > /usr/java/jre1.5.0_15/bin
> > /usr/java/jre1.5.0_15/bin/ControlPanel
> > /usr/java/jre1.5.0_15/bin/java
> >
> > If I test it it works fine.
> >
> > # /usr/java/jre1.5.0_15/bin/java -version
> > java version "1.5.0_15"
> > Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_15-b04)
> > Java HotSpot(TM) Server VM (build 1.5.0_15-b04, mixed mode)
> >
> > So I move it to /usr/lib/jvm and run again:
> >
> > alternatives --config java
> >
> > There are 2 programs which provide 'java'.
> > Selection    Command
> >
> > *+ 1           /usr/lib/jvm/jre-1.6.0-openjdk/bin/java
> >    2           /usr/lib/jvm/jre-1.5.0-gcj/bin/java
> >
> > The Sun Java doesn't show up.
> >
> > /usr/lib/jvm looks like this:
> >
> > ls -al
> > total 204
> > drwxr-xr-x   5 root root   4096 .
> > drwxr-xr-x 183 root root 139264 ..
> > drwxr-xr-x   3 root root   4096 java-1.5.0-gcj-1.5.0.0
> > drwxr-xr-x   3 root root   4096 java-1.6.0-openjdk-1.6.0.0
> > lrwxrwxrwx   1 root root     21 jre -> /etc/alternatives/jre
> > lrwxrwxrwx   1 root root     27 jre-1.5.0 ->
> > /etc/alternatives/jre_1.5.0 drwxr-xr-x   7 root root   4096
> > jre1.5.0_15
> > lrwxrwxrwx   1 root root     26 jre-1.5.0-gcj ->
> > java-1.5.0-gcj-1.5.0.0/jre
> > lrwxrwxrwx   1 root root     27 jre-1.6.0 ->
> > /etc/alternatives/jre_1.6.0 lrwxrwxrwx   1 root root     30
> > jre-1.6.0-openjdk ->
> > java-1.6.0-openjdk-1.6.0.0/jre
> > lrwxrwxrwx   1 root root     25 jre-gcj -> /etc/alternatives/jre_gcj
> > lrwxrwxrwx   1 root root     29 jre-openjdk
> > -> /etc/alternatives/jre_openjdk
> >
> > How do I get the Sun java to be the default Java, without doing a 24
> > step build that Googling finds ?
>
> You must register the new java alternative with the alternatives command 
> first. Just type in as root in a terminal window:
> alternatives --­­install /usr/bin/java java /opt/jre1.6.0/bin/java 3
> alternatives --config java

Thanks for the reply Marcelo.
> And select the one you want to be the default. Replace 
> "/opt/jre1.6.0/bin/" with the path where you have decompressed Sun's 
> java binaries. 
> I've read a long time ago that we shouldn't install Sun's Java RPM in 
> Fedora, because it would overwrite some files of GCJ.

Interesting.
> When you update 
> GCJ the next time, it will overwrite back the Sun's files. I don't know 
> for sure if this was correct or if it is still the case but maybe, just 
> to be safe, you should download the non-rpm package from Sun and 
> decompress it manually in /opt or other directory you like.
> If any one knows if it's still not recommended to install Sun's Java RPM 
> package, please let us know.

I wasn't aware of this.  Maybe it the problem with my Eclipse install.

[Ron Hunter-Duvar]

Linuxguy123 wrote:
> # alternatives --config java
> ...
> How do I get the Sun java to be the default Java, without doing a 24
> step build that Googling finds ?
> ...

Here is the command I came up with to add Sun's Java 1.5.0_16 as an
alternative on Oracle Enterprise Linux 5.0 (a Red Hat derivative, which I
guess makes it a cousin of Fedora 8^), based on the alternatives man page
and some Googling:

# alternatives \
  --install /usr/bin/java            java       
/usr/java/jdk1.5.0_16/bin/java 1500 \
  --slave   /usr/lib/jvm/jre         jre         /usr/java/jdk1.5.0_16/jre/
\
  --slave   /usr/lib/jvm-exports/jre jre_exports
/usr/java/jdk1.5.0_16/jre/lib/ \
  --slave   /usr/bin/rmiregistry     rmiregistry
/usr/java/jdk1.5.0_16/jre/bin/rmiregistry

Make appropriate adjustments for your particular version of Java. Then if
you rerun

# alternatives --config java

it should provide you with the alternative you want. Select it and you
should be all set.