we have redhat machine - version 7.2

we installed the epel repo as the following

rpm -ivh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

 yum install epel-release


 yum repolist
Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
repo id                                                                   repo name                                                                                                    status
epel/x86_64                                                               Extra Packages for Enterprise Linux 7 - x86_64                                                               13,416
repolist: 13,416

but when we want to install the java as

yum install java-1.8.0-openjdk-devel*
Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
No package java-1.8.0-openjdk-devel* available.
Error: Nothing to do

where I am wrong ?