java 子类 的三个可能出现的误区

关于子类的三个可能出现的误区：

代码如下

class Animal{private void eat(){System.out.println("I'm eating!");}void sleep(){System.out.println("I'm Sleeping!");}}class Fish extends Animal{void swim(){System.out.println("I'm swimming!");}void sleep(){System.out.println("Fish sleep!");}}public class Show{public static void main(String[] args){Fish gold=new Fish();//1.子类的sleep作用域更大(同名情况)gold.sleep();gold.swim();//2.子类不能访问private类，下面错的//gold.eat();Animal dogAnimal=new Animal();//3.super类不能访问sub类，因为dog不可能swim//dog.swim();}}