Can't build with JDK8 in IDEA about zero-allocation-hashing HOT 4 CLOSED

@csm-dev-hub can it be successfully built via command line?

from zero-allocation-hashing.

I try this in command line :
/usr/lib/jvm/java-1.8.0-openjdk-amd64/bin/javac src/main/java/net/openhft/hashing/Maths.java

And still error

src/main/java/net/openhft/hashing/Maths.java:9: error: cannot find symbol
          Math.multiplyHigh(0, 0);
              ^
  symbol:   method multiplyHigh(int,int)
  location: class Math
src/main/java/net/openhft/hashing/Maths.java:41: error: cannot find symbol
        final long upper = Math.multiplyHigh(lhs, rhs) + ((lhs >> 63) & rhs) + ((rhs >> 63) & lhs);
                               ^
  symbol:   method multiplyHigh(long,long)
  location: class Math

from zero-allocation-hashing.

what's the result of mvn -Dgpg.skip=true clean verify

from zero-allocation-hashing.

what's the result of mvn -Dgpg.skip=true clean verify

the result is build success

And now I know why :
there is a src/main/java-stub/java/lang/Math.java in this project , but IDEA only Mark src/main/java as Sources Root.

After also Mark directory src/main/java-stub as Sources Root in IDEA, build with JDK8 in IDEA will success.

Thank you for help me figure out.

from zero-allocation-hashing.