Question

Java求解：其大家帮忙解决下面一道习题，谢谢了！

定义类Person及其子类Student、Employee,Employee的子类Manager，每个类定义下列成员变量：
Person：姓名、年龄、家庭住址
Student：学好、年级
Employee：工资、受聘日期
Manager：职务名称
每个类定义构造方法初始化所有变量，覆盖toString()方法输出所有成员变量值。创建这些类的对象，并调用toString()方法。

Answer 1

class Person {
public String name="zhangsan";
public int age=18;
public String add="china";
public String toString() {
return name+","+age+","+add;
}
}
class Student extends Person{
public String no="001";
public String grade="1";
public String toString() {
return super.toString()+","+no+","+grade;
}
}
class Employee{
public double salary=1000;
public String date="2010-01-01";
public String toString() {
return salary+","+date;
}
}
class Manager extends Employee{
public String dutyName="boshi";
public String toString() {
return super.toString()+","+dutyName;
}
}
public class Test {
public static void main(String[] args) {
Person person=new Person();
Student student=new Student();
Employee employee=new Employee();
Manager manager=new Manager();
System.out.println(person);
System.out.println(student);
System.out.println(employee);
System.out.println(manager);
}
}