running Sun's Java compiler on Fedora

[webtekie]

Fedora comes with GNU Java compiler, and today I found out how it sucks big time. I wanted to override the compiler with Sun's JDK, but no luck. I created file /etc/profile.d/runjava.sh in which I set JAVA_HOME, update PATH and CLASSPATH. However, after logging in again when I type java -v I get the header from GNU compiler. When I type echo $JAVA_HOME I get home of Sun's Java Compiler. What's going on here? Shouldn't /etc/profile.d/runjava.sh override whatever was set before?

thanks,
webtekie

[tchung]

Hello,

I would suggest to run my Java Post-Install script.

http://fedoranews.org/tchung/java/

Thomas Chung

[webtekie]

thanks, I did but got some messages:

alternatives version 1.3.11.1 - Copyright (C) 2001 Red Hat, Inc.
This may be freely redistributed under the terms of the GNU Public License.

usage: alternatives --install <link> <name> <path> <priority>
[--initscript <service>]
[--slave <link> <name> <path>]*
alternatives --remove <name> <path>
alternatives --auto <name>
alternatives --config <name>
alternatives --display <name>
alternatives --set <name> <path>

common options: --verbose --test --help --usage --version
--altdir <directory> --admindir <directory>
java - status is auto.
link currently points to /usr/share/java/libgcj-java-placeholder.sh
/usr/share/java/libgcj-java-placeholder.sh - priority 100
slave rmiregistry: /usr/bin/grmiregistry
slave rmiregistry.1.gz: /usr/share/man/man1/grmiregistry.1.gz
Current `best' version is /usr/share/java/libgcj-java-placeholder.sh.
ln: when making multiple links, last argument must be a directory
$ echo $JAVA_HOME --> /usr/java/jre /usr/java/jre1.5.0_01
$ which java --> /usr/bin/java
$ man --path java --> /usr/local/java/jdk1.4//man/man1/java.1

[tchung]

BTW, did you install jdk or jre?

Unless, you're developing software with javac, you only need jre.

I think my script was tested with jre-1_5_0_02-linux-i586.rpm

Make sure you have only one jre directory in /usr/java
and remove any other java script in /etc/profile.d

Thomas Chung

[webtekie]

I have jdk install in /usr/local/java/jdk1.4 and JAVA_HOME references this path. Not running Java 5 yet.
Also, interestingly enough the plain java.sh in /etc/profile.d worked fine on my machine at home, but at work it gives me problems.

[tchung]

If you installed jre-1_5_0_02-linux-i586.rpm
then, you should've gotten following mssage:

[root@tchung-fc3 java]# sh java-post-install.sh
java - status is auto.
link currently points to /usr/java/jre1.5.0_02/bin/java
/usr/share/java/libgcj-java-placeholder.sh - priority 100
slave rmiregistry: /usr/bin/grmiregistry
slave rmiregistry.1.gz: /usr/share/man/man1/grmiregistry.1.gz
/usr/java/jre1.5.0_02/bin/java - priority 300
slave rmiregistry: (null)
slave rmiregistry.1.gz: (null)
Current `best' version is /usr/java/jre1.5.0_02/bin/java.
$ echo $JAVA_HOME --> /usr/java/jre1.5.0_02
$ which java --> /usr/java/jre1.5.0_02/bin/java
$ man --path java --> /usr/java/jre1.5.0_02/man/man1/java.1
[root@tchung-fc3 java]#

[webtekie]

But what do I do if I need to run 1.4?

[tchung]

Originally Posted by webtekie

But what do I do if I need to run 1.4?

Well,

Update my script to fit for your jdk 1.4.

Once again, make sure you have only one copy of jre or jdk directory in /usr/java and remove any other java script in /etc/profile.d

Thomas Chung

[webtekie]

thanks, I'll give it a shot.

[tchung]

I just posted an updated version for j2sdk-1_4_2_08-linux-i586.rpm

http://fedoranews.org/tchung/java/j2sdk/

Let me know how it goes.

Thomas Chung

[crackers]

http://fedoraforum.org/forum/showpos...6&postcount=10 - sorry, Thomas - beat ya to it.