Meanwhile we have agreed with Oracle on the Java license topic and can inform you about the following:
According to the ORACLE license conditions "Oracle Technology Network License Agreement for Oracle Java SE" of 16.04.2019, usage for development purposes in integrated development environments is still free of charge. Accordingly, it is possible to use the Java SE Development Kit to create and test the controller in LISA without a Java license, since the controller logic is passed on as non-compiled source code. Oracle has confirmed to us that the Java use in LISA fulfills the OTN license conditions regarding development and test. So there will be no costs in this respect.