How to install Java ( JDK ) on Linux Fedora

01) Download file from Oracle site:
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
(In my case, the select file was jdk-8u5-linux-i586.tar.gz because my Fedora is 32 bits).

02) As root user, create directory /usr/java and move the file to this new directory.

[root@thanatos java]# pwd
/usr/java
[root@thanatos java]# ls -lrt
total 156164
-rw-r--r--. 1 root root 159910666 Jun 19 19:58 jdk-8u5-linux-i586.gz
[root@thanatos java]#

03) Uncompress the file.

[root@thanatos java]# gunzip jdk-8u5-linux-i586.gz
[root@thanatos java]# ls -lrt
total 321008
-rw-r--r--.  1 root root 328704000 Jun 19 19:58 jdk-8u5-linux-i586
[root@thanatos java]#

04) Due to a lack in Oracle site, uncompressed file does not have .tar extension. No problem, untar it using "tar -xvf". Since I have obsessive compulsive disorder, I changed the file name to put the extension .tar before untaring it.
[root@thanatos java]# mv jdk-8u5-linux-i586 jdk-8u5-linux-i586.tar
[root@thanatos java]# tar -xvf jdk-8u5-linux-i586.tar
jdk1.8.0_05/
jdk1.8.0_05/src.zip
jdk1.8.0_05/lib/
jdk1.8.0_05/lib/ir.idl

... supressed lines ...

jdk1.8.0_05/db/bin/setNetworkServerCP.bat

jdk1.8.0_05/db/bin/stopNetworkServer.bat

jdk1.8.0_05/db/README-JDK.html

[root@thanatos java]#

05) In order to save disk space, remove tar file.

[root@thanatos java]# ls -lart

total 321012

drwxr-xr-x.  8   10  143      4096 Mar 18 05:03 jdk1.8.0_05

-rw-r--r--.  1 root root 328704000 Jun 19 19:58 jdk-8u5-linux-i586.tar

drwxr-xr-x. 12 root root      4096 Jun 19 19:59 ..

drwxr-xr-x.  3 root root      4096 Jun 19 20:04 .

[root@thanatos java]# rm jdk-8u5-linux-i586.tar

rm: remove regular file ‘jdk-8u5-linux-i586.tar’? y

[root@thanatos java]#

06) Edit /etc/profile in order to set the new java directory for all users, by including these lines at the file:

[root@thanatos bin]# vi /etc/profile

#Line to be added (please, correct for newest versions of Java).

export JAVA_HOME=/usr/java/jdk1.8.0_05

export PATH=$JAVA_HOME/bin:$PATH

07) To be continued... 

I know that there is an issue about running java classes from crontab, because .profile is not read.