设计一个抽象类名字为 Person,它的子类为Student和 Employee；person类有name以及toString方法；student有 status属性(freshman, sophomore, junior, or senior),定义status 为常量;Employee类 有office, salary；分别定义各个类的有参构造方法，Person(String name)、Student（String name,int status）、Employee(String name,String office,double salary),注意需要在子类构造方法第一句调用父类有参构造方法，为子类也实现toString方法。编写测试类定义一个数组存放每个非抽象类对象（Student和 Employee），然后利用多态调用toString方法打印各个对象的所有属性信息。(为了减少书写量，只需要为name属性完成get和set方法，其他属性不用写)

以下是符合要求的Java代码：

// Person抽象类
abstract class Person {
    private String name;

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

    public String getName() {
        return name;
    }

    public abstract String toString();
}

// Student类
class Student extends Person {
    private static final int FRESHMAN = 1;
    private static final int SOPHOMORE = 2;
    private static final int JUNIOR = 3;
    private static final int SENIOR = 4;

    private int status;

    public Student(String name, int status) {
        super(name);
        this.status = status;
    }

    public String getStatus() {
        String statusStr = "";
        switch (status) {
            case FRESHMAN:
                statusStr = "Freshman";
                break;
            case SOPHOMORE:
                statusStr = "Sophomore";
                break;
            case JUNIOR:
                statusStr = "Junior";
                break;
            case SENIOR:
                statusStr = "Senior";
                break;
        }
        return statusStr;
    }

    @Override
    public String toString() {
        return "Name: " + getName() + ", Status: " + getStatus();
    }
}

// Employee类
class Employee extends Person {
    private String office;
    private double salary;

    public Employee(String name, String office, double salary) {
        super(name);
        this.office = office;
        this.salary = salary;
    }

    public String getOffice() {
        return office;
    }

    public double getSalary() {
        return salary;
    }

    @Override
    public String toString() {
        return "Name: " + getName() + ", Office: " + getOffice() + ", Salary: " + getSalary();
    }
}

// 测试类
public class Test {
    public static void main(String[] args) {
        Person[] people = new Person[4];
        people[0] = new Student("Alice", 2);
        people[1] = new Student("Bob", 4);
        people[2] = new Employee("Charlie", "A101", 5000.0);
        people[3] = new Employee("Dave", "B202", 7000.0);

        for (Person person : people) {
            System.out.println(person.toString());
        }
    }
}

这段代码定义了抽象类 `Person` 和它的两个子类 `Student` 和 `Employee`。`Person` 类有一个 `name` 属性和 `toString` 方法。`Student` 类有一个 `status` 属性（使用常量表示学生的年级）和相应的 `toString` 方法。`Employee` 类有一个 `office` 属性和一个 `salary` 属性，以及相应的 `toString` 方法。测试类 `Test` 创建了一个包含不同类型对象的数组，并利用多态调用 `toString` 方法打印各个对象的属性信息。