Changes on BPM in SAP process orchestration 7.5

A warm salutations to all,

I am new to SAP PO 5.0 and Java 8.

Currently I am stuck up while migrating the scenarios containing BPMs and ccBPMs from PI 7.1 to PO 7.5 .

Can anyone please help me out with the changes that are to done to BPMs and ccBPMs in order to make them meet the standard of Java 8

Thanks and Regards

Hariharan.M