fix build - use JDK 8
fix build - use JDK 8

researchstudio-sat/webofneeds,researchstudio-sat/webofneeds,researchstudio-sat/webofneeds,researchstudio-sat/webofneeds,researchstudio-sat/webofneeds,researchstudio-sat/webofneeds,researchstudio-sat/webofneeds