Read access to enclosing field ... is emulated by a synthetic accessor method

Newbie & Debugging Questions
#1

Hello.

Read access to enclosing field HelloIntersection.laserEventID is emulated by a synthetic accessor method. Increasing its visibility will improve your performance.

Can some tell me what this means? Eclipse shows it for some field.

#2

The comments & links here seem to explain the situations in which this will occur.