Install Java in Ubuntu 7.04 Feisty

First we need to download de file jre-6u1-linux-i586.bin from www.java.com

Create a directory for the files to be installed:
# sudo mkdir /usr/java

Move the downloaded file to the previous directory:
# sudo mv jre-6u1-linux-i586.bin /usr/java

Change the permissions for make it executable:
# sudo chmod a+x jre-6u1-linux-i586.bin

Run the file to install software:
# /usr/java/jre-6u1-linux-i586.bin

Now create a symbolic link:
# cd /usr/lib/mozilla-firefox/plugins
# sudo ln -s /home/user/jre1.6.0_01/plugin/i386/ns7/libjavaplugin_oji.so

Restart firefox and enjoy.