Can Ready API 1.3.1 use java v1.8.0?

Hi,

We have our own JAR file that we place in the bin/ext directory. Our JAR file is complied with Java v1.8. We are getting error stating unsupported major minor verion 52.0. We belive this is related to Ready API using java v1.7 and our jar compiled with 1.8. When I change the ready-api.sh to force it to use JAVA=java then Ready API doesnt load. Can Ready API v1.3.1 run using java v 1.8?

Thanks in advance