第五题 人类继承案例要求如下1：定义一个人类Person有姓名、年龄、性别等共有属性有eat方法此方法打印吃饭、有show方法打印姓名+年龄+性别；2：定义学生类Student继承Person类有学号、成绩等私有属性有构造方法初始化对象属性有eat方法此方法打印炒菜吃米饭有构造方法初始化对象属性有show方法打印姓名+年龄+性别+学号+成绩；3：定义工人类Worker继承Person类有工号、薪资

1. 定义Person类

public class Person { private String name; private int age; private String gender;

public Person(String name, int age, String gender) {
    this.name = name;
    this.age = age;
    this.gender = gender;
}

public void eat() {
    System.out.println("吃饭");
}

public void show() {
    System.out.println("姓名：" + name + "，年龄：" + age + "，性别：" + gender);
}

}

2. 定义Student类

public class Student extends Person { private String studentId; private int score;

public Student(String name, int age, String gender, String studentId, int score) {
    super(name, age, gender);
    this.studentId = studentId;
    this.score = score;
}

public void eat() {
    System.out.println("炒菜，吃米饭");
}

public void show() {
    super.show();
    System.out.println("学号：" + studentId + "，成绩：" + score);
}

}

3. 定义Worker类

public class Worker extends Person { private String workerId; private double salary;

public Worker(String name, int age, String gender, String workerId, double salary) {
    super(name, age, gender);
    this.workerId = workerId;
    this.salary = salary;
}

public void eat() {
    System.out.println("炖菜，吃馒头");
}

public void show() {
    super.show();
    System.out.println("工号：" + workerId + "，薪资：" + salary);
}

}

4. 测试类

public class Test { public static void main(String[] args) { Student student = new Student("小明", 17, "男", "NO13", 82); student.eat(); student.show();

    Worker worker = new Worker("老明", 40, "男", "GH34", 5800);
    worker.eat();
    worker.show();
}