From Fedora Project Wiki
Abstract
This page provides information about jdk installations on Fedora.
This page will discuss mainly about Open JDK and Oracle JDK, how to install them, test and configure them on Fedora.
What is JDK
JDK or Java Development Kit is an implementation of Java Environment, Standard Edition and is required for Java development purposes.
OpenJDK and project IcedTea
Fedora has shipped OpenJDK as default JRE implementation. It's based on Sun Microsystem's/Oracle's JavaOne open source release and complemented by Red Hat's IcedTea project that implements the missing third party components that Sun/Oracle could not release under free License.
OpenJDK's java.library.path, shared librarary paths for i386 are:
/usr/lib /usr/lib/jvm/java-1.?.0-openjdk-1.6.0.0.x86_64/jre/lib/
and for x86_64:
/usr/lib64 /usr/lib/jvm/java-1.?.0-openjdk-1.6.0.0.x86_64/jre/lib/amd64/
OpenJDK package name on Fedora is java-1.?.0-openjdk.