I believe the problem may be the version you installed.
The kickstart file, and the java list on community, shows the AMD needs java-1.8.0-openjdk. My AMD lists the "java-1.8.0-openjdk-126.96.36.199-2.b15.el7_3.x86_64" package installed.
Please remove the version you installed and try installing the openjdk version.
Sorry about that - then you probably need:
I'm not sure about the particulars of how yum works. I do not see the .rpm file on my system after installing the package with yum.