B4J Question B4J & JDKx


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Longtime User
Hi All

I have develop a B4J app that produced an error. I passed the details onto Oracle and the actually responded to it. They have suggested installing an early release of JDK 9.

I have installed it but unfortunately I get the following error when compiling:

Parsing code. 0.20
Compiling code. 0.55
Compiling generated Java code. Error
javac 1.9.0-ea
error: Source option 1.5 is no longer supported. Use 1.6 or later.


I am going to try JDK 8 and see it the sames occurs.

Any idea why this is occurring or is B4J bound to a specific JDK environment.