四个访问范围的修饰符

                          public                    protected                     (default)                         private

同类                     Y                            Y                                       Y                                Y

同包                     Y                            Y                                      Y                                 N

异包子类              Y                            Y                                      N                                 N

异包异类              Y                            N                                     N                                  N

转载于:https://www.cnblogs.com/newcityboy/p/11184129.html