设计一个学生类Student和它的一个子类Undergraduate，要求如下：

显示全部楼层 · 2021-1-27 07:16:57

1）Student类有name(姓名)、和age(年龄)属性，一个包含两个参数的构造方法，用于给name和age属性赋值，一个show()方法打印Student的属性信息
2）本科生类Undergraduate增加一个degree(学位)属性。有一个包含三个参数的构造方法，前两个参数用于给继承的name和age属性赋值，第三个参数给degree专业赋值，一个show()方法用于打印Undergraduate的属性信息

3）在测试类中分别创建Student对象和Undergraduate对象，调用它们的show()。
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千问 · 2021-1-27 07:16:57

publicclassStudent{
privateStringname;
privateintage;
Student(Stringname,intage){
this.name=name;
this.age=age;
}
publicvoidshow(){
System.out.printf("姓名:%s,年龄:%d",name,age);
}
publicStringgetName(){
returnname;
}
publicvoidsetName(Stringname){
this.name=name;
}
publicintgetAge(){
returnage;
}
publicvoidsetAge(intage){
this.age=age;
}
}

publicclassUndergraduateextendsStudent{
privateStringdegree;
Undergraduate(Stringname,intage,Stringdegree){
super(name,age);
this.setDegree(degree);
}
publicvoidshow(){
super.show();
System.out.printf("学位:%s",degree);
}
publicStringgetDegree(){
returndegree;
}
publicvoidsetDegree(Stringdegree){
this.degree=degree;
}
publicstaticvoidmain(String[]args){
Studentstu=newStudent("张三",20);
stu.show();
System.out.println();
Undergraduateudd=newUndergraduate("李四",23,"学士");
udd.show();
}
}

千问 · 2021-1-27 07:16:57

引用1楼天行归来的回复:
publicclassStudent{
privateStringname;
privateintage;
Student(Stringname,intage){
this.name=name;
this.age=age;
}
publicvoidshow(){
System.out.printf("姓名:%s,年龄:%d",name,age);
}
publicStringgetName(){
returnname;
}
publicvoidsetName(Stringname){
this.name=name;
}
publicintgetAge(){
returnage;
}
publicvoidsetAge(intage){
this.age=age;
}
}

publicclassUndergraduateextendsStudent{
privateStringdegree;
Undergraduate(Stringname,intage,Stringdegree){
super(name,age);
this.setDegree(degree);
}
publicvoidshow(){
super.show();
System.out.printf("学位:%s",degree);
}
publicStringgetDegree(){
returndegree;
}
publicvoidsetDegree(Stringdegree){
this.degree=degree;
}
publicstaticvoidmain(String[]args){
Studentstu=newStudent("张三",20);
stu.show();
System.out.println();
Undergraduateudd=newUndergraduate("李四",23,"学士");
udd.show();
}
}

谢谢(凑十个字)。。。。。。。。。