com/sun/scenario/effect/impl/prism/PrFilterContext.java contains a reference to Boolean.hashCode(boolean) which is a Java 8 method.
It only occurs at one place, and can easily be replaced by the implementation of that method in OpenJDK:

diff -r 286217918102 modules/graphics/src/main/java/com/sun/scenario/effect/impl/prism/PrFilterContext.java
--- a/modules/graphics/src/main/java/com/sun/scenario/effect/impl/prism/PrFilterContext.java Thu Jun 12 18:51:06 2014 +0300
+++ b/modules/graphics/src/main/java/com/sun/scenario/effect/impl/prism/PrFilterContext.java Thu Jun 12 18:55:53 2014 +0200
@@ -93,7 +93,7 @@
 
     @Override
     public int hashCode() {
- return getReferent().hashCode() ^ Boolean.hashCode(forceSW);
+ return getReferent().hashCode() ^ (forceSW ? 1231 : 1237);
     }
 
     @Override