java-抽象类 子类实现相同方法 想想去执行抽象类中的方法，在从抽象类中调用子类具体方法

Question

如下代码，想得到这样结果execute AA before execute..C execute AA after
应该怎么处理
public class Test {
public static void main(String[] args) {
C c = new C();
c.A();
}

}

interface YY {
public void A();
}
abstract class A implements YY{
public void A() {
System.out.println("execute AA before");
A();
System.out.println("execute AA after");
}
}

class B extends A {
public void B() {
System.out.println("execute B");
}
}

class C extends B implements YY{
@Override
public void A() {
System.out.println("execute..C");
}
}

Answer 1

只是换一种思维

```public class Test {
public static void main(String[] args) {
C c = new C();
c.A(12);
c.BB();
}

}

interface YY {
public void A();
}
abstract class A implements YY{
public void A(int a) { // 只是换一种思维
System.out.println("execute AA before");
A();
System.out.println("execute AA after");
}
}

abstract class B extends A {
public void BB() {
System.out.println("execute B");
}
}

class C extends B implements YY{
@Override
public void A() {
System.out.println("execute..C");
}
}