一段有意思的代碼，一段有意思代碼

一段有意思的代碼，一段有意思代碼

package ex01.pyrmont;public class Son extends Father {    public void a(){        System.out.println("a from son");        super.a();    }        public void b(){        System.out.println("b from son");    }        public static void main(String[] args) {        Son son=new Son();        son.a();    }}

package ex01.pyrmont;public class Father {    public void a(){        System.out.println("a from father");        b();    }        public void b(){        System.out.println("b from father");    }}

執行後會輸出什麼,為什麼?

答案如下

a from son
a from father
b from son

如果把Son中的方法b去掉,會怎麼樣呢?

a from son
a from father
b from father