继承的讲解

class Animal{
    public String name;
    public int age;
    public void wash(){
        System.out.println(name+"正在洗澡");
    }
}
class   Cat  extends  Animal {
    public void xiaomi() {
        System.out.println(name + "正在喵喵叫");
    }
}
    class Dog extends Animal{
        public void xiaowang(){
            System.out.println(name+"正在汪汪叫");
        }
    }
public class TestDemo {
    public static void main(String[] args) {
        Cat cat=new Cat();
        cat.name="咪咪";
        cat.age=2;
        cat.wash();
        cat.xiaomi();
        Dog  dog=new Dog();
        dog.name="贝贝";
        dog.age=3;
        dog.xiaowang();
        dog.wash();
    }
}

class Base {
    public int a;
    public int b;
    public int c = 199;
    public void methodBase() {
        System.out.println("Base");
    }
}
class Derived extends Base {
    public int c = 9;
    public void methodDerived() {
        System.out.println("Derived");
    }
    public void methodBase(int a) {
        System.out.println("Derived");
    }
    public void func() {
        System.out.println(super.a);
        super.methodBase();
        methodDerived();
    }
    public void func1() {
        //子类有 那么就拿子类的 子类没 就拿父类的
        System.out.println(a);
        System.out.println(b);
        System.out.println(c);//如果父类 和子类 有同名的成员变量，优先访问 子类自己的
        System.out.println(super.c);
    }
}
public class Test2 {
    public static void main(String[] args) {
        Derived derived = new Derived();
        derived.func();
    }
}