Java-学生信息管理系统

一：项目结构（Eclipse）

功能实现：基本的增删改查

二：代码

package student;

public class Student {
    private String sno; //学号
    private String name;//姓名
    private String age;//年龄
    private String sex;//性别
    private String score;//成绩
    public String getSno() {
        return sno;
    }
    public void setSno(String sno) {
        this.sno = sno;
    }
    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 getSex() {
        return sex;
    }
    public void setSex(String sex) {
        this.sex = sex;
    }
    public String getScore() {
        return score;
    }
    public void setScore(String score) {
        this.score = score;
    }
    public Student() {
        super();
        // TODO Auto-generated constructor stub
    }
}

package student;

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

public class Main {
    static Scanner sc = new Scanner(System.in);

    public static void main(String[] args) {
        zhuye();
    }

    private static void zhuye() {
        ArrayList<Student> list = new ArrayList<Student>();
        for (;;) {
            // TODO Auto-generated method stub
            System.out.println("-----欢迎进入学生管理系统-----");
            System.out.println("-----请输入数字代号进行操作-----");
            System.out.println("1:所有学生信息");
            System.out.println("2:添加学生信息");
            System.out.println("3:删除学生信息");
            System.out.println("4:修改学生信息");
            System.out.println("5:查询学生信息");
            System.out.println("6:退出系统");
            int choice = sc.nextInt();
            if (choice == 1) {
                showallstudent(list);
            } else if (choice == 2) {
                addstudent(list);
            } else if (choice == 3) {
                deletestudent(list);
            } else if (choice == 4) {
                updatestudent(list);
            } else if (choice == 5) {
                selectstudent(list);
            } else if (choice == 6) {
                System.out.println("-----退出系统成功-----");
                break;
            } else {
                System.out.println("-----请输入正确代号-----");
            }
        }
    }

    private static void updatestudent(ArrayList<Student> list) {
        // TODO Auto-generated method stub
        if (list.size() == 0) {
            System.out.println("-----当前没有学生信息-----");
        } else {
            System.out.println("请输入修改学生的学号:");
            String id = sc.next();
            for (int i = 0; i < list.size(); i++) {
                if (id.equals(list.get(i).getSno())) {
                    System.out.println("姓名:");
                    String name = sc.next();
                    System.out.println("年龄:");
                    String age = sc.next();
                    System.out.println("性别:");
                    String sex = sc.next();
                    System.out.println("成绩:");
                    String score = sc.next();
                    Student student = new Student();
                    student.setSno(id);
                    student.setName(name);
                    student.setAge(age);
                    student.setSex(sex);
                    student.setScore(score);
                    list.set(i, student);
                    System.out.println("-----修改成功-----");
                } else {
                    System.out.println("-----没有找到该学生，请重新输入-----");
                    updatestudent(list);
                }
            }
        }

    }

    private static void addstudent(ArrayList<Student> list) {
        // TODO Auto-generated method stub
        System.out.println("学号:");
        String sno = sc.next();
        System.out.println("姓名:");
        String name = sc.next();
        System.out.println("年龄:");
        String age = sc.next();
        System.out.println("性别:");
        String sex = sc.next();
        System.out.println("成绩:");
        String score = sc.next();
        Student student = new Student();
        student.setSno(sno);
        student.setName(name);
        student.setAge(age);
        student.setSex(sex);
        student.setScore(score);
        if (list.add(student)) {
            // System.out.println(list);
            System.out.println(name + "学生信息添加成功");
        } else {
            System.out.println(name + "学生信息添加失败");
        }
    }

    private static void selectstudent(ArrayList<Student> list) {
        // TODO Auto-generated method stub
        if (list.size() == 0) {
            System.out.println("-----当前没有学生信息-----");
        } else {
            System.out.println("请输入您想查询的学生学号：");
            String id = sc.next();
            for (int i = 0; i < list.size(); i++) {
                if (id.equals(list.get(i).getSno())) {
                    System.out.println("学号:" + list.get(i).getSno() + " 姓名:" + list.get(i).getName() + " 年龄:"
                            + list.get(i).getAge() + " 性别:" + list.get(i).getSex() + " 成绩:" + list.get(i).getScore());
                } else {
                    System.out.println("没有找到该学生，请重新输入");
                    selectstudent(list);
                }
            }
        }

    }

    private static void deletestudent(ArrayList<Student> list) {
        // TODO Auto-generated method stub
        if (list.size() == 0) {
            System.out.println("-----当前没有学生信息-----");
        } else {
            System.out.println("请输入您想要删除的学生学号：");
            String id = sc.next();
            for (int i = 0; i < list.size(); i++) {
                if (id.equals(list.get(i).getSno())) {
                    list.remove(i);
                    System.out.println("学生信息删除成功");
                } else {
                    System.out.println("未找到您想要删除的学生信息，请重新输入");
                    deletestudent(list);
                }
            }
        }

    }

    private static void showallstudent(ArrayList<Student> list) {
        // TODO Auto-generated method stub
        if (list.size() == 0) {
            System.out.println("-----当前没有学生信息-----");
        } else {
            //System.out.println(list);
            for (Student stu : list) {
                System.out.println("学号:" + stu.getSno() + " 姓名:" + stu.getName() + "年龄:" + stu.getAge() + " 性别:"
                        + stu.getSex() + " 成绩:" + stu.getScore());
            }
        }
    }
}

三：运行截图