【JAVA】实现学生管理系统：

最新推荐文章于 2024-07-05 17:18:48 发布

原创最新推荐文章于 2024-07-05 17:18:48 发布 · 157 阅读

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#java

本文介绍了一个简单的学生信息管理系统的设计与实现，该系统使用Java语言编写，具备添加、删除、修改及查询学生信息的功能。

package com;

import java.util.ArrayList;
import java.util.Scanner;

public class StudentManager {
    public static void main(String[] args) {
        ArrayList<Student> 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 推出");
            System.out.println("请输入你的选择：");
            Scanner sc = new Scanner(System.in);
            String line = sc.nextLine();
            if(line.equals("5"))
            {
                System.out.println("谢谢使用");
                break;
            }
            switch (line) {
                case "1":
                    addStudent(array);
                    break;
                case "2":
                    System.out.println("删除学生");
                    deleteStudent(array);
                    break;
                case "3":
                    changeStudent( array);
                    break;
                case "4":
                    findStudent( array);
                    break;
                case "5":
                    System.out.println("谢谢使用");
                    break;

            }
        }
    }

    public static void addStudent(ArrayList<Student> array) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入学生学号");
        String sid = sc.nextLine();
        System.out.println("请输入学生姓名");
        String name = sc.nextLine();
        System.out.println("请输入学生年龄");
        String age = sc.nextLine();
        System.out.println("请输入学生住址");
        String address = sc.nextLine();
        Student s = new Student();
        s.setSid(sid);
        s.setName(name);
        s.setAge(age);
        s.setAddress(address);
        array.add(s);
        System.out.println("添加成功！！！");
    }
    public static void changeStudent(ArrayList<Student> array) {
        Scanner sc=new Scanner(System.in);
        System.out.println("请输入你需要修改的学生学号：");
        String sid = sc.nextLine();
        for(int i=0;i<array.size();i++)
        {
            Student s = array.get(i);
            if(sid.equals(s.getSid()))
            {
                System.out.println("请输入学生新姓名：");
                String name = sc.nextLine();
                s.setName(name);
                System.out.println("请输入学生新年龄：");
                String age = sc.nextLine();
                s.setAge(age);
                System.out.println("请输入学生新居住地：");
                String address = sc.nextLine();
                s.setAddress(address);
            }
        }
    }
    public static void deleteStudent(ArrayList<Student> array) {
        Scanner sc=new Scanner(System.in);
        System.out.println("请输入需要删除的学生学号：");
        String sid = sc.nextLine();
        for(int i=0;i< array.size();i++)
        {
            Student s = array.get(i);
            if(s.getSid().equals(sid))//比较两个字符串用equals(),否则是在比较地址
            {
                array.remove(i);
                System.out.println("删除成功");
                break;
            }
        }
    }
    public static void findStudent(ArrayList<Student> array) {
        if(array.size()==0)
        {
            System.out.println("无数据，请先添加信息再查询");
            return;
        }
            System.out.println("学号\t\t姓名\t\t年龄\t\t居住地");
            for (int i = 0; i < array.size(); i++) {
                Student s = array.get(i);
                System.out.println(s.getSid() + "\t\t" + s.getName() + "\t\t" + s.getAge() + "岁" + "\t" + s.getAddress());
            }

    }

Student类

package com;

public class Student {
    private String sid;
    private String name;
    private String age;
    private String address;

    public Student() {
    }

    public Student(String sid, String name, String age, String address) {
        this.sid = sid;
        this.name = name;
        this.age = age;
        this.address = address;
    }

    public String getSid() { return sid; }

    public String getName() { return name; }

    public String getAge() { return age; }

    public String getAddress() { return address; }

    public void setSid(String sid) { this.sid = sid; }

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

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

    public void setAddress(String address) { this.address = address; }
}