JAVA240906/src/main/java/com/sf/day07/lx/Test1.java

package com.sf.day07.lx;

public class Test1 {
    public static void main(String[] args) {
        C c = new C();
        c.showA();
        c.showB();
        c.showC();

    }
}

abstract  class A{
    int numa = 10;
    public abstract void showA();
}

abstract   class B extends A{
    int numb = 20;
    public abstract void showB();
}


class  C extends B{
    int numc = 30;
    @Override
    public void showB() {
        System.out.println("B类中numb:" + numb);
    }
    @Override
    public void showA() {
        System.out.println("A类中numa:" + numa);
    }
    public void showC(){
        System.out.println("C类中numc:" + numc);
    }
}