Java 继承：Stu 类构造函数填空（2分）

class Person{ private String name; private char sex='M'; Person(String name){ this.name=name; } Person(String name,char sex){ this.name=name; this.sex=sex; } } class Stu extends Person { long id; private String name; private char sex='M'; public Stu(String name, long id, char sex){ 'super(name, sex)' ; this.id=id; } }