新人学Java，学生管理系统

Rember

[Java] 纯文本查看 复制代码

分享议一下代码:
首先是自定义学生类,代码如下:
       package com.itheima;

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

        public Student() {
                super();
        }

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

        public String getSid() {
                return sid;
        }

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

        public String getName() {
                return name;
        }

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

        public String getAge() {
                return age;
        }

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

        public String getAddress() {
                return address;
        }

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



学管理系统主代码:
    package com.itheima;

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

public class StudentManangerTest {
        public static void main(String[] args) {
                ArrayList<Student> array = new ArrayList<Student>();
                while (true) {
                        System.out.println("--------欢迎来到学生管理系统,请选择：--------");
                        System.out.println("1 查看所有学生");
                        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 退出");
                        System.out.println("请输入你的选择：");
                        Scanner sc = new Scanner(System.in);
                        String choiceString = sc.nextLine();
                        switch (choiceString) {
                        case "1":
                                findAllStudent(array);
                                break;
                        case "2":
                                addStudent(array);
                                break;
                        case "3":
                                deleteStudent(array);
                                break;
                        case "4":
                                updateStudent(array);
                                break;
                        case "5":
                        default:
                                System.out.println("谢谢你的使用 ");
                                System.exit(0);
                                break;
                        }
                }
        }

        private static void updateStudent(ArrayList<Student> array) {
                Scanner sc = new Scanner(System.in);
                System.out.println("请输入你要修改学生的学号：");
                String sid = sc.nextLine();
                int index = -1;
                for (int x = 0; x < array.size(); x++) {
                        Student s = array.get(x);
                        if (s.getSid().equals(sid)) {
                                index = x;
                                break;
                        }
                }
                if (index != -1) {
                        System.out.println("请输入新姓名：");
                        String name = sc.nextLine();
                        System.out.println("请输入新年龄：");
                        String age = sc.nextLine();
                        System.out.println("请输入新地址：");
                        String address = sc.nextLine();
                        Student s = new Student();
                        s.setSid(sid);
                        s.setName(name);
                        s.setAge(age);
                        s.setAddress(address);
                        array.set(index, s);
                        System.out.println("修改学生成功");
                } else {
                        System.out.println("不好意思,你要修改的学号对应的学生信息不存在，请回去重新选择你的操作");
                        return;
                }
        }

        private static void deleteStudent(ArrayList<Student> array) {
                Scanner sc = new Scanner(System.in);
                System.out.println("请输入你要删除学生的学号：");
                String sid = sc.nextLine();
                int index = -1;
                for (int x = 0; x < array.size(); x++) {
                        Student s = array.get(x);
                        if (s.getSid().equals(sid)) {
                                index = x;
                                break;
                        }
                }
                if (index != -1) {
                        array.remove(index);
                        System.out.println("删除学生成功");
                } else {
                        System.out.println("不好意思,你要删除的学号对应的学生信息不存在，请回去重新选择你的操作");
                        return;
                }
        }

        private static void addStudent(ArrayList<Student> array) {
                Scanner sc = new Scanner(System.in);
                String sid;
                while (true) {
                        System.out.println("请输入学号：");
                        sid = sc.nextLine();

                        boolean flag = false;
                        for (int x = 0; x < array.size(); x++) {
                                Student s = array.get(x);
                                if (s.getSid().equals(sid)) {
                                        flag = true;
                                }
                        }

                        if (flag == true) {
                                System.out.println("你输入的学号已经被占用,请重新输入");
                        } else {
                                break;
                        }
                }

                System.out.println("请输入姓名：");
                String name = sc.nextLine();
                System.out.println("请输入年龄：");
                String age = sc.nextLine();
                System.out.println("请输入地址：");
                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("添加学生成功");
        }

        private static void findAllStudent(ArrayList<Student> array) {
                if (array.size() == 0) {
                        System.out.println("不好意思,目前没有学生信息可供查看,请回去重新选择你的操作");
                        return;
                }
                System.out.println("学号\t\t姓名\t年龄\t居住地");
                for (int x = 0; x < array.size(); x++) {
                        Student s = array.get(x);
                        System.out.println(s.getSid() + "\t" + s.getName() + "\t" + s.getAge() + "\t" + s.getAddress());
                }
        }

联系我时，请说是在 挂海论坛 上看到的，谢谢！

qq1339258233

你这还是黑窗口运行的有没有用框架写的