Question

java作业求解

1、抽象类People:属性name，抽象方法speak(String s)，构造方法People(String name);
2、类Student继承People类，添加属性stunumber，添加构造方法Student(String number,String name)，实现Speak方法，输出参数S,然后输出“我是学生”,然后输出“我的学号是：”+stunumber，然后输出“我的姓名是：”+name;
3、类Teacher继承People类，添加属性teanumber，添加构造方法Teacher(String number,String name)实现Speak方法，输出参数S,然后输出“我是老师”然后输出“我的员工号是：”+teanumber，然后输出“我的姓名是：”+name;
4、在main函数中，首先用People申明一个变量p，然后用Student类实现一个对象实例，使用你的学号和姓名构造该对象实例，并把这个对象实例赋值给p，然后调用p.speak("你好")。然后用Teacher类实现一个对象实例，使用"12345"作为员工号和"张三"作为姓名构造该对象实例，并把这个对象实例赋值给p，然后调用p.speak("您好")。

Answer 1

public class Test40031 {//测试类
public static void main(String[] args) {

People p = null;

p = new Student("001", "Zhang San");//学号001， 姓名zhang san
p.speak("你好");

p = new Teacher("12345", "张三");//老师类实例化
p.speak("你好");
}

}

abstract class People{//抽象类People
protected String name;

protected abstract void speak(String s);

public People(String name){
this.name = name;
}
}

class Student extends People{//学生类

private String stunumber;

public Student(String number, String name){
super(name);
this.stunumber = number;
}

public void speak(String s) {
System.out.println(s);
System.out.println("我是学生");
System.out.println("我的学号是: " + stunumber);
System.out.println("我的姓名是: " + super.name);
}

}

class Teacher extends People{//教师类

private String teanumber;

public Teacher(String number,String name){
super(name);
this.teanumber = number;
}

public void speak(String s){
System.out.println(s);
System.out.println("我是老师");
System.out.println("我的员工号是: " + teanumber);
System.out.println("M我的姓名是: " + super.name);
}
}

Answer 2

抽象类People：
public abstract class People {

public String name;
public abstract void speak(String s);
public People(String name){
this.name = name;
};
}

实体类Student:

public class Student extends People {

private String stu_num;

public Student(String name) {
super(name);
}

public Student(String stu_num, String name) {
this(name);
this.stu_num = stu_num;
}

@Override
public void speak(String s) {
System.out.println(s);
System.out.println("我是学生。");
System.out.println("我的学号是：" + stu_num);
System.out.println("我的姓名是：" + name);
}

}

实体类teacher：
public class Teacher extends People {

private String tea_num;

public Teacher(String name) {
super(name);
}

public Teacher(String tea_num, String name) {
this(name);
this.tea_num = tea_num;
}

@Override
public void speak(String s) {
System.out.println(s);
System.out.println("我是老师。");
System.out.println("我的员工号是：" + tea_num);
System.out.println("我的姓名是：" + name);
}

public static void main(String[] args) {

People p = new Student("XS001","Jack");
p.speak("您好");

p = new Teacher("12345","张三");
p.speak("你好");
}

}

=============================
运行结果：
您好
我是学生。
我的学号是：XS001
我的姓名是：Jack
你好
我是老师。
我的员工号是：12345
我的姓名是：张三