Blackdown Java Installation x86_64

Applicable to Fedora Versions

• Fedora Core 5+

Requirements

1. Fedora Core x86_64 Installation
2. Mozilla x86_64 Installed
3. Firefox x86_64 Installed
   

Doing the work

1. Download the JRE-1.4.2-03 bin here: (ftp://mirrors.ibiblio.org/pub/mirrors/blackdown/JDK-1.4.2/amd64/03/ ).
   

2. Get the file "j2re-1.4.2-03-linux-amd64.bin"

3. Once the file is downlaoded, Open a terminal .
   

4. Login as root by entering the following.

   su -

5. Now change to the directory /opt.
   

   cd /opt

6. Execute the binary installation for JRE in the /opt directory (ensure that you use the path to the downloaded file i.e. /home/sglaser/downloads).

   sh /home/sglaser/downloads/j2re-1.4.2-03-linux-amd64.bin 

   After executing this command you will need to read through the License Agreement and type yes for the installer to actually start installing the software. Once installed it will create a folder "j2re1.4.2" in the /opt directory.
   

7. Now, to install the plug-in, execute the following command.

   ln -s /opt/j2re1.4.2/plugin/amd64/mozilla/libjavaplugin_oji.so /usr/lib64/mozilla/plugins/libjavaplugin_oji.so

Close all instances of Firefox and restart for the plug-in to function properly. Note: It has to be a symbolic link, copying libjavaplugin_oji.so will NOT work.

8. Create a java.sh script by entering the following, ensure you press enter after each line of text entered.

   cat <<EOF>> /etc/profile.d/java.sh
   export JAVA_HOME=/opt/j2re1.4.2
   export PATH=\$JAVA_HOME/bin:\$PATH
   EOF

9. In the terminal (which should still be open) type. NOTE: THIS STEP MUST BE EXECUTED AS ROOT, SEE STEP 5. IF EXECUTED VIA SUDO IT WILL CORRUPT YOUR PATH STATEMENT.

   source /etc/profile.d/java.sh

10. Hit enter, then type the following:

    /usr/sbin/alternatives --install /usr/bin/java java /opt/j2re1.4.2/bin/java 2

11. Hit enter, then type the following:

    /usr/sbin/alternatives --config java

12. Hit enter, Then the following text should be displayed:

    There are 2 programs which provide 'java'.
                 Selection    Command 
                 -----------------------------------------------  
                 *+ 1           /usr/lib/jvm/jre-1.4.2-gcj/bin/java    
                    2           /opt/j2re1.4.2/bin/java
                 Enter to keep the current selection[+], or type selection number:

13. Type:

    2   

14. Hit enter, then type the folllowing:

    /usr/sbin/alternatives --display java

15. Hit enter, then a line similar to the following should be displayed:

    java - status is manual.  
        link currently points to /opt/j2re1.4.2/bin/java
       /usr/lib/jvm/jre-1.4.2-gcj/bin/java - priority 1420
        slave rmiregistry: /usr/lib/jvm/jre-1.4.2-gcj/bin/rmiregistry
        slave jre_exports: /usr/lib/jvm-exports/jre-1.4.2-gcj
        slave jre: /usr/lib/jvm/jre-1.4.2-gcj
       /opt/j2re1.4.2/bin/java - priority 2
        slave rmiregistry: (null)
        slave jre_exports: (null)
        slave jre: (null)
       Current `best' version is /usr/lib/jvm/jre-1.4.2-gcj/bin/java.  

16. Close all instances of Firefox and restart for the plug-in to function properly.

17. You should now be able to install and run Java applications.

Troubleshooting

How to test

Common problems and fixes

If JAVA applications do not run after restarting firefox, you may need to check your /var/log/audit/audit.log. If you see messages similar to the following "type=AVC msg=audit(1144977424.506:73): avc: denied { execmod } for pid=3005 comm="java_vm" name="libdeploy.so" dev=dm-0 ino=3274482 scontext=user_u:system_r:unconfined_t:s0 tcontext=system_u:object_r:lib_t:s0 tclass=file" you may need to fix the SELINUX context by doing the following as root:

chcon -t textrel_shlib_t /opt/j2re1.4.2/lib/x86_64/libdeploy.so

More Information

Disclaimer

Added Reading

• http://fedoraproject.org/wiki/JavaFAQ
• Blackdown Java Installation Notes.
  
• Blackdown Java Release Notes.