question: private static Field findAccessibleField ( Class clas , String fieldName ) throws UtilEvalError , NoSuchFieldException { Field field ; try { field = clas . getField ( fieldName ) ; ReflectManager . RMSetAccessible ( field ) ; return field ; } catch ( NoSuchFieldException e ) { } while ( clas != null ) { try { field = clas . getDeclaredField ( fieldName ) ; ReflectManager . RMSetAccessible ( field ) ; return field ; } catch ( NoSuchFieldException e ) { } clas = clas . getSuperclass ( ) ; } throw new NoSuchFieldException ( fieldName ) ; }
target:  Used when accessibility capability is available to locate an occurrence of the field in the most derived class or superclass and set its  accessibility flag. Note that this method is not needed in the simple non accessible case because we don't have to hunt for fields. Note that classes may declare overlapping private fields, so the  distinction about the most derived is important.  Java doesn't normally allow this kind of access (super won't show private variables) so  there is no real syntax for specifying which class scope to use...