WHAT exactly did you install ?
fedora by default DOSE NOT use Oracles JAVA ! it uses OpenJDK
openjdk is what is in the fedora repos and is what is installed using yum ( by default )
now Oracles JAVA 1.7 can be installed BUT you must reset "alternatives"
see Mjmwired's page
most things will work with the opensource OpenJDK but not EVERYTHING
somethings will need Oracles JAVA 1.7
or the now dead and unsupported Oracles "JAVA 1.6 "
Fedora , unlike Ubuntu , will NEVER ship with NON free NON gpl's software
no Adobe flash, NO Oracle Java , no mp3, no MS's .wmv , and so on