Re: FC4 / java / bin files

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On Tue, 2005-07-19 at 20:30 -0500, Rich Stanford wrote:
> On Tuesday 19 July 2005 2:48 pm, Paul Howarth wrote:
> > On Tue, 2005-07-19 at 10:56 -0700, Kam Leo wrote:
> > > On 7/19/05, Robert Locke <lists@xxxxxxxxx> wrote:
> > > > On Tue, 2005-07-19 at 14:09 -0300, Ted Gervais wrote:
> > > > > I am trying to get java working in fc4 and in particular version 1.5.
> > > > > I downloaded this file:
> > > > >
> > > > > jre-1_5_0_04-linux-i586-rpm.bin
> > > > >
> > > > > And thought I could 'run' that file to produce an RPM file. From
> > > > > there, I should have been able to install it.
> > > > >
> > > > > No luck.
> > > > >
> > > > > Where have I gone wrong?
> > > >
> > > > First, you haven't read the release notes for FC4 that explicitly said
> > > > not to use the RPM from Sun....
> > > >
> > > > Second, take a look at www.fedoranews.org as there have been a couple
> > > > of articles over there about getting Java installed in FC4....
> > > >
> > > > Good luck,
> > > >
> > > > --Rob
> > >
> > > There is nothing wrong with using Sun's Java software on Linux.  You
> > > can go with either the JPackage route or use Sun's product(s).
> >
> > If you use Sun's RPM you may find that it gets uninstalled at a later
> > date because it gets replaced by a Fedora package - this is because Sun
> > specify the "provides" for their package differently to everyone else,
> > and this is what is alluded to in the FC4 release notes. That's why the
> > JPackage route is better than just installing Sun's RPM.
> >
> > Paul.
> > --
> > Paul Howarth <paul@xxxxxxxxxxxx>
> 
> I have to do development utilizing, currently, two different versions of Java.   
> In order to facilitate this, I do not do installs using the RPM.  Instead, I 
> download the JDK from Sun and install it (as root) in /usr/local.  (This 
> method will work with other JDK's)  I then create a symbolic link which 
> points to the version of Java I want to use:
> 
> ln -s /usr/local/jdk1.5.0 /usr/local/java
> 
> I then make a couple of entries in my .bash_profile file in my home directory:
> 
> JAVA_HOME=/usr/local/java
> 
> PATH="$JAVA_HOME/bin:"$PATH
> export JAVA_HOME PATH
> 
> Note that the reference to JAVA_HOME has to come first in your PATH statement.  
> Then, later, if I need to change versions of Java, I change the symbolic link 
> in the /usr/local directory.  The change is instantaneous, and allows you to 
> experiment with different java versions.

Using the JPackage java RPMs, you can do this system-wide using
"alternatives --config java". No way of doing it per-user as above
though.

Paul.
-- 
Paul Howarth <paul@xxxxxxxxxxxx>


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