You seem to use GraphHopper on Android. We do only support the OpenJDK and there is no support for VMs like ART or Dalvik (for Android OS) that state to support Java but in reality never really supported it (library-wise). Which makes many things really ugly. See Future of 'Offline' Routing · Issue #1940 · graphhopper/graphhopper · GitHub
And although the expression engine we use (janino) supports JREs 7+ it only emits JVM bytecode: compiler · Issue #66 · janino-compiler/janino · GitHub