Question

第一题，求解

Answer 1

public class Student {
String name;
int age;
Student(String name,int age){
this.name=name;
this.age=age;
}
void show(){
System.out.println("name:"+name+"，age:"+age);
}
}
public class Undergraduate extends Student{
String degree;
Undergraduate(String name,int age,String degree){
this.name=name;
this.age=age;
this.degree=degree;
}
void show(){
System.out.println("name:"+name+"，age:"+age+",degree:"+degree);
}
}
public class Test{
public static void main(String[] args){
Student stu=new Student("Tom",21);
Undergraduate ug=new Undergraduate("张三",30,"本科");
stu.show();
ug.show();
}
}
纯手工输入：请采纳

Answer 2

你这第一题是不是太多了

追问

只有3个问啊

Answer 3

我这百度云不能用，你发个邮箱，我把文件发给你。