Java如何實現學生管理系統控制臺版本

本篇內容介紹了“Java如何實現學生管理系統控制臺版本”的有關知識，在實際案例的操作過程中，不少人都會遇到這樣的困境，接下來就讓小編帶領大家學習一下如何處理這些情況吧！希望大家仔細閱讀，能夠學有所成！

創建學生類Student 

public class Student {
    private String id;
    private String name;
    private String arg;
    private String address;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

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

    public String getArg() {
        return arg;
    }

    public void setArg(String arg) {
        this.arg = arg;
    }

    public String getAddress() {
        return address;
    }

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

main方法實現CRUD

package com.railway.modules.base.test;

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

public class TestStudent {
    public static void main(String[] args) {
        ArrayList<Student> array = new ArrayList<Student>();
        while (true) {
            System.out.println("----------學生管理系統-----------");
            System.out.println("---------1.查詢學生信息---------");
            System.out.println("---------2.添加學生信息---------");
            System.out.println("---------3.刪除學生信息---------");
            System.out.println("---------4.修改學生信息---------");
            System.out.println("---------5.輸入你的選擇---------");
            Scanner input = new Scanner(System.in);
            int a = input.nextInt();
            switch (a) {
                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("謝謝你的使用");
                    System.exit(0);
                    break;
            }
        }
    }
    
}

查詢方法

public static void findAllStudent(ArrayList<Student> array) {
        // TODO Auto-generated method stub
        if (array.size() == 0) {
            System.out.println("對不起，沒有學生信息");
            System.out.println("請重新選擇");
            return;
        }
        System.out.println("學號\t姓名\t年齡\t居住地");
        for (int x = 0; x < array.size(); x++) {
            Student s = array.get(x);
            System.out.println(s.getId() + "\t" + s.getName() + "\t"
                    + s.getArg() + "\t" + s.getAddress());
        }
    }

添加方法

public static void addStudent(ArrayList<Student> array) {
        Scanner input = new Scanner(System.in);
        String id;
        while(true){
            System.out.println("請輸入你的學號");
            id = input.nextLine();
            // 判斷ID是否重復；
            boolean flag = false;

            // 遍歷集合信息
            for (int x = 0; x < array.size(); x++) {
                Student st = array.get(x);
                // 取得該學生id與數組中id進行對比
                if (st.getId().equals(id)) {
                    flag = true;
                    break;

                }

            }
            if (flag) {
                System.out.println("對不起，學號被占用");
            }else{
                break;
            }
        }
        System.out.println("請輸入你的姓名");
        String name = input.nextLine();
        System.out.println("請輸入你的年齡");
        String arg = input.nextLine();
        System.out.println("請輸入你的地址");
        String address = input.nextLine();

        Student s = new Student();
        s.setId(id);
        s.setName(name);
        s.setArg(arg);
        s.setAddress(address);
        array.add(s);
        System.out.println("添加成功");

    }

刪除方法

public static void deleteStudent(ArrayList array) {
        System.out.println("請輸入你想刪除學生的學號");
        Scanner input = new Scanner(System.in);
        String id = input.nextLine();
        int index = -1;
        for (int i = 0; i < array.size(); i++) {
            Student s = (Student) array.get(i);
            if (s.getId().equals(id)) {
                index = i;
            }
        }
    }

修改方法

public static void updateStudent(ArrayList<Student> array) {

        // TODO Auto-generated method stub
        Scanner input = new Scanner(System.in);
        System.out.println("請輸入你要修改的學號");
        String id = input.nextLine();
        int index = -1;
        //變量集合
        for (int i = 0; i < array.size(); i++) {
            //獲取所有學生對象
            Student s = array.get(i);
            if (s.getId().equals(id)) {
                index = i;
                break;
            }
        }
        if (index == -1) {
            System.out.println("不好意思，你要修改的學生信息不存在");
        } else {
            System.out.println("請輸入學生姓名");
            String name = input.nextLine();
            System.out.println("請輸入學生年齡");
            String arg = input.nextLine();
            System.out.println("請輸入學生地址");
            String address = input.nextLine();

            //創建學生對象
            Student s = new Student();
            s.setId(id);
            s.setId(name);
            s.setArg(arg);
            s.setAddress(address);

            //修改集合中的學生對象
            array.set(index, s);

            System.out.println("修改學生成功");
        }

    }

控制臺打印

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Files (x86)\JetBrains\IntelliJ IDEA 2016.3.6\lib\idea_rt.jar" com.intellij.rt.execution.application.AppMain com.railway.modules.base.test.TestStudent
----------學生管理系統-----------
---------1.查詢學生信息---------
---------2.添加學生信息---------
---------3.刪除學生信息---------
---------4.修改學生信息---------
---------5.輸入你的選擇---------
1
對不起，沒有學生信息
請重新選擇
----------學生管理系統-----------
---------1.查詢學生信息---------
---------2.添加學生信息---------
---------3.刪除學生信息---------
---------4.修改學生信息---------
---------5.輸入你的選擇---------
2
請輸入你的學號
1
請輸入你的姓名
2
請輸入你的年齡

3請輸入你的地址

4添加成功
----------學生管理系統-----------
---------1.查詢學生信息---------
---------2.添加學生信息---------
---------3.刪除學生信息---------
---------4.修改學生信息---------
---------5.輸入你的選擇---------

“Java如何實現學生管理系統控制臺版本”的內容就介紹到這里了，感謝大家的閱讀。如果想了解更多行業相關的知識可以關注億速云網站，小編將為大家輸出更多高質量的實用文章！