问题
In java programming, method level access modifiers using protected or public where private can be used will affect the performance in any way? if so in what what way it affects the run time performance.
回答1:
Quoting erickson from the following answer:
The access modifier on the field doesn't make any difference in speed, but invoking the accessor method does.
ps. Please upvote the original answer instead of this one.
回答2:
Even if there is a theoretical difference, I doubt that there is a measurable diffrence. At least in any sensible Java runtime
来源：https://stackoverflow.com/questions/26676200/how-does-access-modifier-impact-the-performance-in-java