学生系统代码

完成学生信息管理系统

• 定义1个学生类，属性（私有的）：学号、姓名、年龄、性别、综合成绩。

• 定义1个数组，用来存储学生对象

• 完成以下功能：

• 0.打印菜单，提示用户进行操作

• 1.查找学生，输入学生学号，返回学生的所有信息

• 2.增加学生，输入学生所有的个人信息，将其存储到数组中

• 3.删除学生，输入学生学号，在数组中删除该学生

• 4.修改学生，输入要修改的学生的学号，将其信息进行修改

public class Task {
    public static void main(String[] args) {
        Student s1 = new Student(1, "xiaobai", 19, "男", 99);
        Student s2 = new Student(2, "xiaohong", 19, "男", 99);
        Student s3 = new Student(3, "xiaolan", 19, "男", 99);

        Student[] stuArr = null;

        stuArr = insertStudent(stuArr, s1);
        stuArr = insertStudent(stuArr, s2);

        showStudentList(stuArr);
        System.out.println("========================");

        Scanner scanner = new Scanner(System.in);
        int choice = 0;
        while (ture) {
            showMenu();
            System.out.println("请输入你要做的操作（1-6）：");
            choice = scanner.nextInt();
            switch (choice) {
                case 1:
                    break;
                case 2:
                    break;
                case 3:
                    break;
                case 4:
                    break;
                case 5:
                    break;
                case 6:
                    break;
            }
        }
    }

    /*
     * 打印菜单：
     * */
    public static void showMenu() {
        System.out.println("===========学生信息管理系统==========");
        System.out.println("1.查询学生");
        System.out.println("2.添加学生");
        System.out.println("3.删除学生");
        System.out.println("4.修改学生");
        System.out.println("5.显示学生列表");
        System.out.println("6.退出系统");
    }
    /*
     * 新增学生
     * */

    public static Student[] insertStudent(Student[] arr, Student student) {
        Student[] newArr = null;
        if (arr == null) {
            newArr[0] = student;
        } else {
            newArr = new Student[arr.length + 1];
            for (int i = arr.length; i++) {
                newArr[i] = arr[i];
            }
            newArr[arr.length] = student;
        }
        return newArr;
    }

    /*
    * 修改学生
    *   1.先找到要修改的学生
    *   2.输出提示信息
    *   3.调用setXXX方法
    * */

    public static void modifyStudent(Student[] arr, int id, String sex, double score) {
        int index = findStudentIndex(arr, id);
        if (index == -1) {
            System.out.println("没有你要修改的学生");
        } else {
            arr[index].setId(id);
            arr[index].setName(name);
            arr[index].setAge(age);
            arr[index].setSex(sex);
            arr[index].setScore(score);
        }
    }
    /*
    * 
    * */

    class Student {
        private int id;
        private String name;
        private int age;
        private String sex;
        private double score;

        public Student(int id, String name, int age, String sex, double score) {
            this.id = id;
            this.name = name;
            this.age = age;
            this.sex = sex;
            this.score = score;
        }

        public Student() {
        }

        public int getId() {
            return id;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public int getAge() {
            return age;
        }

        public void setAge(int age) {
            this.age = age;
        }

        public String getSex() {
            return sex;
        }

        public void setSex(String sex) {
            this.sex = sex;
        }

        public double getScore() {
            return score;
        }

        public void setScore(double score) {
            this.score = score;
        }
    }
}