[上]JAVA学习系列197.学生管理系统项目_添加功能

[上]JAVA学习系列197.学生管理系统项目_添加功能

视频

[vbilibili]【尚硅谷2024最新JAVA入门视频教程（上部）JAVA零基础入门教程】 https://www.bilibili.com/video/BV1YT4y1H7YM/?p=197&share_source=copy_web&vd_source=85f561e7442caa320f4a23b57edee129[/vbilibili]

笔记

3.4.工具类_ArrayUtils

public class ArrayUtils {
    private ArrayUtils(){

    }

    public static int findIndexById(Student[] students,int id,int count){
        //遍历,查找
        for (int i = 0; i < count; i++) {
            if (id==students[i].getId()){
                return i;
            }
        }

        return -1;
    }
}

3.5.添加功能_addStudent

 private void addStudent() {
        //1.键盘录入学生信息
        System.out.println("请您输入学生学号:");
        int id = sc.nextInt();
        System.out.println("请您输入学生姓名:");
        String name = sc.next();
        System.out.println("请您输入学生年龄:");
        int age = sc.nextInt();
        System.out.println("请您输入学生性别:");
        String sex = sc.next();
        //2.将学生信息封装到Student对象中
        Student student = new Student(id, name, age, sex);
        //3.将封装好的Student对象放到students数组中
        students[count] = student;
        //4.count++记录存储了多少个对象
        count++;
        System.out.println("添加成功!!!");
        
    }