Java 继承:Stu 类构造函数填空(带解析)
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; } }
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