Java Installation on Fedora Core 4

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Installing Java

If you wish to install JRE, you will need to download the JRE from http://java.sun.com/j2se/1.5.0/download.jsp

Upon successful download, you will need to :
1. Move the *.bin to /opt
2. Change the permission of *.bin +x or executable by chmod +x *-linux-i586.bin
3. Extract the *.bin by issuing ./*.bin
4. Change to root usin su
5. Make soft link of ln -s /opt/jre1.5.0_05/plugin/i386/ns7/libjavaplugin_oji.so /usr/lib/mozilla/plugins/libjavaplugin_oji.so
6. Edit /etc/profile.d/java.sh (using text editor joe/nano/gedit), type :

export J2RE_HOME=/opt/jre1.5.0_05
export PATH=$J2RE_HOME/bin:$PATH

Save the file.
7. Edit the java path environment by issuing :

source /etc/profile.d/java.sh
which java

8. If you see the result from number 7 : /opt/jre1.5.0_05/bin/java then type : /usr/sbin/alternatives --install /usr/bin/java java /opt/jre1.5.0_05/bin/java 2
9. Then type /usr/sbin/alternatives --config java and choose 2 (/opt/jre1.5.0_05/bin/java)
10.Check the installation by issuing /usr/sbin/alternatives --display java
11.You should see :

java - status is manual.
link currently points to /opt/jre1.5.0_05/bin/java
...

12.Done!.

	Java from Sun
	Fedora Core warns against using Java from Sun. Therefore you must use the above instructions to trick Fedora Core in installing the Java from Sun to other directory : /opt