题目信息：
- 设计一个学生类Student，其数据成员有name(姓名)、age(年龄)和degree(学位)。由Student类派生出本科生类Undergraduate和研究生类Graduate，本科生类Undergraduate增加成员specialty(专业)，研究生类增加成员direction(研究方向)。每个类都有show()方法，用于输出数据成员信息。最后请输出下列信息:
参考答案：
public class Student_1202 {
String name;
int age;
String degree;
public String show () {
return
"姓名：" + name + '\'' +
", 年龄：" + age +
", 学位：" + degree + '\'' +
'}';
}
public Student_1202 (String name, int age, String degree) {
this.name = name;
this.age = age;
this.degree = degree;
}
public String getName () {
return name;
}
public void setName (String name) {
this.name = name;
}
public int getAge () {
return age;
}
public void setAge (int age) {
this.age = age;
}
public String getDegree () {
return degree;
}
public void setDegree (String degree) {
this.degree = degree;
}
public static void main (String[] args) {
Undergraduate zhangsan=new Undergraduate ("张三", 20,"本科","通信");
Undergraduate lisi=new Undergraduate ("李四",21,"本科","电子");
diection wangwu=new diection ("王五",25,"硕士","通信");
diection liuliu=new diection ("刘六",36,"博士","通信");
System.out.println (zhangsan.show ());
System.out.println (lisi.show ());
System.out.println (wangwu.show ());
System.out.println (liuliu.show ());
}
}
class Undergraduate extends Student_1202{
String sepcialty;
public Undergraduate (String name, int age, String degree, String sepcialty) {
super (name, age, degree);
this.sepcialty = sepcialty;
}
@Override
public String show () {
return
"姓名：" + this.name +" "+
" 年龄：" + this.age + " "+
" 学位：" + this.degree + " " +"专业："+this.sepcialty ;
}
}
class diection extends Student_1202{
String sepcialty;
public diection(String name, int age, String degree, String sepcialty) {
super (name, age, degree);
this.sepcialty = sepcialty;
}
@Override
public String show () {
return
"姓名：" + this.name +" "+
" 年龄：" + this.age + " "+
" 学位：" + this.degree + " " +"研究方向："+this.sepcialty ;
}
}