目录

1.学生类

2.测试类

2.1主界面代码

2.2添加学生方法

2.3删除学生方法

2.4修改学生方法

2.5查看所有学生方法

3.运行效果

1.学生类

public class Student {
    private String name;
    private String age;
    private String studentId;
    private String address;
    public Student(){}
    public Student(String name,String age,String studentId,String address){
        this.name =name;
        this.age = age;
        this.studentId = studentId;
        this.address = address;
    }
    public void setName(String name){
        this.name = name;
    }
    public String getName(){
        return name;
    }
    public void setAge(String age){
        this.age = age;
    }
    public String getAge(){
        return age;
    }
    public void setStudentId(String studentId){
        this.studentId = studentId;
    }
    public String getStudentId(){
        return studentId;
    }
    public void setAddress(String address){
        this.address = address;
    }
    public String getAddress(){
        return address;
    }
}

2.测试类

2.1主界面代码

public class StudentManager {
    public static void main(String[] args) {

        ArrayList array = new ArrayList();
        while (true) {
            System.out.println("------欢迎来到学生管理系统------");
            System.out.println("1.添加学生");
            System.out.println("2.删除学生");
            System.out.println("3.修改学生");
            System.out.println("4.查看所有学生");
            System.out.println("5.退出");
            System.out.println("请输入你的选项：");
            Scanner sc = new Scanner(System.in);
            int a = sc.nextInt();
            switch (a) {
                case 1:
                    addStudent(array);
                    break;
                case 2:
                    delStudent(array);
                    break;
                case 3:
                    modifyStudent(array);
                    break;
                case 4:
                    scan(array);
                    break;
                case 5:
                    System.out.println("谢谢使用");
                    System.exit(0);
            }
        }
    }

2.2添加学生方法

//添加学生
    public static void addStudent(ArrayList array) {
        Scanner sc = new Scanner(System.in);
        System.out.print("姓名：");
        String name = sc.nextLine();
        System.out.print("学号：");
        String studentId = sc.nextLine();
        System.out.print("年龄：");
        String age = sc.nextLine();
        System.out.print("地址：");
        String address = sc.nextLine();

        Student s = new Student();
        s.setName(name);
        s.setStudentId(studentId);
        s.setAge(age);
        s.setAddress(address);

        array.add(s);
        System.out.println("添加成功");
    }

2.3删除学生方法

    //删除学生
    public static void delStudent(ArrayList array) {
        Scanner sc = new Scanner(System.in);
        System.out.print("请输入需要删除的学生学号：");
        String studentId = sc.nextLine();
        for (int i = 0; i < array.size(); i++) {
            Student s = array.get(i);
            if (s.getStudentId().equals(studentId)) {
                array.remove(i);
                break;
            } else {
                System.out.println("您输入的学号有误");
            }
        }
    }

2.4修改学生方法

//修改学生
    public static void modifyStudent(ArrayList array) {
        Scanner sc = new Scanner(System.in);
        System.out.print("请输入需要修改学生的学号：");
        String studentId = sc.nextLine();
        for (int i = 0; i < array.size(); i++) {
            Student s = array.get(i);
            if (s.getStudentId().equals(studentId)) {
                System.out.print("请输入新姓名：");
                String name = sc.nextLine();
                System.out.print("请输入新年龄：");
                String age = sc.nextLine();
                System.out.print("请输入新地址：");
                String address = sc.nextLine();
                s.setName(name);
                s.setAddress(address);
                s.setAge(age);
            } else {
                System.out.println("输入的学号有误");
            }
        }
    }

2.5查看所有学生方法

//查看所有学生
    public static void scan(ArrayList array) {
        if(array.size()==0){
            System.out.println("无信息，请先添加信息再查询");
            return;
        }
        System.out.println("学号t姓名t年龄t居住地");
        for (int i = 0; i < array.size(); i++) {
            Student s = array.get(i);

            System.out.println(s.getName() + "t" + s.getStudentId() + "t" + s.getAge() + "岁t" + s.getAddress());
        }
    }

3.运行效果