学生管理系统Java基础知识就能完成，黑马程序员案例6-2

废话不多说，上代码。能帮到你的话，给个点赞和收藏可好？

代码：

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


public class student {
   private int number;
    private int age;
    private  String name;
    private  String address;

    public int getNumber () {
        return number;
    }

    public void setNumber (int number) {
        this.number = number;
    }

    public int getAge () {
        return age;
    }

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

    public String getName () {
        return name;
    }

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

    public String getAddress () {
        return address;
    }

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

    public student (int number, int age, String name, String address) {
        this.number = number;
        this.age = age;
        this.name = name;
        this.address = address;
    }

    @Override
    public String toString () {
        return "student{" +
                "number=" + number +
                ", age=" + age +
                ", name='" + name + ''' +
                ", address='" + address + ''' +
                '}';
    }

    public static void main (String[] args) {
        //符合list的要求 这里用到了泛型，将类型参数化
        List list=new ArrayList<> ();
        //初始化一个
        list.add (new student (1, 25, "张嘉文","广西南宁"));
        System.out.println ("学生管理系统 "+"你想干什么？请输入");
        System.out.println ("1:查询");
        System.out.println ("2:添加");
        System.out.println ("3:修改");
        System.out.println ("4:删除");
        System.out.println ("5:退出");
        Scanner login=new Scanner (System.in);
        while (true) {
            int choice = login.nextInt ();
            Scanner scanner = new Scanner (System.in);
            switch (choice) {
                case 1: {
                    
                    System.out.println ("查询信息");
                    //foe each在这里体现
                    for (student s : list) {
                        System.out.println (s.toString ());
                    }
                    break;
                }
                case 2: {
                    
                    System.out.println ("请依次输入学号、姓名、年龄、住址。一行内输入、空格隔开");
                    String add[] = scanner.nextLine ().split (" ");
                    int addnum = Integer.parseInt (add[0]);
                    for (student s : list) {
                        if (addnum == s.getNumber ()) {
                            System.out.println ("学号重复，添加失败");
                            break;
                        }
                    }
                    //int number, int age, String name, String address
                    list.add (new student (addnum, Integer.parseInt (add[2]), add[1], add[3]));
                    System.out.println ("添加成功");
                    break;
                }
                case 3: {
                    
                    System.out.println ("请依次输入要修改人的学号、姓名、年龄、住址。一行内输入、空格隔开");
                    String update[] = scanner.nextLine ().split (" ");
                    int upnum=Integer.parseInt (update[0]);
                    int updateIndex=0;
                    for (student s : list) {
                        if (upnum == s.getNumber ()) {
                          //找到了，需要修改
                            list.get (updateIndex).setName ( (update[1]));
                            list.get (updateIndex).setAge (Integer.parseInt (update[2]));
                            list.get (updateIndex).setNumber (upnum);
                            list.get (updateIndex).setAddress (update[3]);
                            System.out.println ("修改完毕");
                            break;
                        }
                        updateIndex++;
                    }
                }
                case  4:{
                    
                    System.out.println ("请依次输入要删除人的学号、姓名、年龄、住址。一行内输入、空格隔开");
                    String update[] = scanner.nextLine ().split (" ");
                    int denum=Integer.parseInt (update[0]);
                    int deinex=0;
                    for (student s : list) {
                        if (denum == s.getNumber ()) {
                            list.remove (deinex);
                        }
                        deinex++;
                    }

                }
                case  5:{
                    System.exit (1);
                }
            }
        }
    }
}