2.(学号尾号为1340同)编写一个Family类，里面有三个家庭成员(father motherchild类对象)、寝室号等属性，以及寝室挑选某同学打扫卫生的动作。编写一个people类，包含:姓名、年龄、审稿等属性，以及吃饭、睡觉等动作。 在第三个Test 类中，创建1个家庭和3名同学，要求有你本人，本人姓名和学号必须是真实的。并让3个人在选出 1个人打扫卫生(推荐使用多态)。用java编程

好的，以下是代码实现：

Family类：

public class Family {
    private Father father;
    private Mother mother;
    private Child child;
    private String dormitory;

    public Family(Father father, Mother mother, Child child, String dormitory) {
        this.father = father;
        this.mother = mother;
        this.child = child;
        this.dormitory = dormitory;
    }

    public void chooseCleaner() {
        System.out.println("在寝室" + dormitory + "中选择一个人打扫卫生：");
        People[] people = {father, mother, child};
        int randomIndex = (int) (Math.random() * 3);
        People cleaner = people[randomIndex];
        System.out.println(cleaner.getName() + "被选为打扫卫生的人！");
    }
}

Father类：

public class Father extends People {
    public Father(String name, int age, String position) {
        super(name, age, position);
    }
}

Mother类：

public class Mother extends People {
    public Mother(String name, int age, String position) {
        super(name, age, position);
    }
}

Child类：

public class Child extends People {
    public Child(String name, int age, String position) {
        super(name, age, position);
    }
}

People类：

public class People {
    private String name;
    private int age;
    private String position;

    public People(String name, int age, String position) {
        this.name = name;
        this.age = age;
        this.position = position;
    }

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }

    public String getPosition() {
        return position;
    }

    public void eat() {
        System.out.println(name + "在吃饭！");
    }

    public void sleep() {
        System.out.println(name + "在睡觉！");
    }
}

Test类：

public class Test {
    public static void main(String[] args) {
        Father father = new Father("张三", 40, "父亲");
        Mother mother = new Mother("李四", 35, "母亲");
        Child child = new Child("王五", 10, "孩子");
        Family family = new Family(father, mother, child, "301");
        People[] people = {father, mother, child, new People("赵六", 20, "同学"), new People("钱七", 21, "同学"), new People("孙八", 22, "同学")};
        for (People person : people) {
            System.out.print(person.getName() + " ");
            person.eat();
            person.sleep();
        }
        family.chooseCleaner();
    }
}

上述代码采用了面向对象的思想，将家庭成员和同学的属性和行为封装到了相应的类中，并在Test类中进行实例化和调用。其中，通过多态的方式，使得可以随机选择一个人进行打扫卫生。