用Java编写学生信息管理系统

好的，学生信息管理系统通常包括以下功能：

1. 学生信息录入：包括学生基本信息、成绩信息等。

2. 学生信息查询：可以按照学生姓名、学号、班级等条件进行查询。

3. 学生成绩统计：可以按照学科、班级等条件进行成绩统计。

4. 学生成绩分析：对学生的成绩进行分析，例如成绩分布情况等。

下面是一个简单的Java实现：

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

public class StudentInfoManagementSystem {

    // 定义学生类
    static class Student {
        String name; // 姓名
        String id; // 学号
        String className; // 班级
        int mathScore; // 数学成绩
        int englishScore; // 英语成绩
        int chineseScore; // 语文成绩

        public Student(String name, String id, String className, int mathScore, int englishScore, int chineseScore) {
            this.name = name;
            this.id = id;
            this.className = className;
            this.mathScore = mathScore;
            this.englishScore = englishScore;
            this.chineseScore = chineseScore;
        }
    }

    // 定义学生列表
    static ArrayList<Student> students = new ArrayList<Student>();

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (true) {
            System.out.println("请选择操作：");
            System.out.println("1. 添加学生信息");
            System.out.println("2. 查询学生信息");
            System.out.println("3. 统计学生成绩");
            System.out.println("4. 分析学生成绩");
            System.out.println("5. 退出");

            int choice = scanner.nextInt();

            switch (choice) {
                case 1:
                    addStudent(scanner);
                    break;
                case 2:
                    queryStudent(scanner);
                    break;
                case 3:
                    statStudentScore(scanner);
                    break;
                case 4:
                    analyzeStudentScore();
                    break;
                case 5:
                    System.exit(0);
                    break;
                default:
                    System.out.println("无效操作，请重新选择！");
                    break;
            }
        }
    }

    // 添加学生信息
    static void addStudent(Scanner scanner) {
        System.out.println("请输入学生姓名：");
        String name = scanner.next();
        System.out.println("请输入学生学号：");
        String id = scanner.next();
        System.out.println("请输入学生班级：");
        String className = scanner.next();
        System.out.println("请输入学生数学成绩：");
        int mathScore = scanner.nextInt();
        System.out.println("请输入学生英语成绩：");
        int englishScore = scanner.nextInt();
        System.out.println("请输入学生语文成绩：");
        int chineseScore = scanner.nextInt();

        students.add(new Student(name, id, className, mathScore, englishScore, chineseScore));
        System.out.println("添加学生信息成功！");
    }

    // 查询学生信息
    static void queryStudent(Scanner scanner) {
        System.out.println("请选择查询方式：");
        System.out.println("1. 按姓名查询");
        System.out.println("2. 按学号查询");
        System.out.println("3. 按班级查询");

        int choice = scanner.nextInt();
        switch (choice) {
            case 1:
                System.out.println("请输入学生姓名：");
                String name = scanner.next();
                for (Student student : students) {
                    if (student.name.equals(name)) {
                        System.out.println(student.id + " " + student.name + " " + student.className + " " +
                                student.mathScore + " " + student.englishScore + " " + student.chineseScore);
                    }
                }
                break;
            case 2:
                System.out.println("请输入学生学号：");
                String id = scanner.next();
                for (Student student : students) {
                    if (student.id.equals(id)) {
                        System.out.println(student.id + " " + student.name + " " + student.className + " " +
                                student.mathScore + " " + student.englishScore + " " + student.chineseScore);
                    }
                }
                break;
            case 3:
                System.out.println("请输入学生班级：");
                String className = scanner.next();
                for (Student student : students) {
                    if (student.className.equals(className)) {
                        System.out.println(student.id + " " + student.name + " " + student.className + " " +
                                student.mathScore + " " + student.englishScore + " " + student.chineseScore);
                    }
                }
                break;
            default:
                System.out.println("无效操作，请重新选择！");
                break;
        }
    }

    // 统计学生成绩
    static void statStudentScore(Scanner scanner) {
        System.out.println("请选择统计方式：");
        System.out.println("1. 按班级统计");
        System.out.println("2. 按学科统计");

        int choice = scanner.nextInt();
        switch (choice) {
            case 1:
                System.out.println("请输入班级名称：");
                String className = scanner.next();
                int mathTotalScore = 0;
                int englishTotalScore = 0;
                int chineseTotalScore = 0;
                int count = 0;
                for (Student student : students) {
                    if (student.className.equals(className)) {
                        mathTotalScore += student.mathScore;
                        englishTotalScore += student.englishScore;
                        chineseTotalScore += student.chineseScore;
                        count++;
                    }
                }
                System.out.println("班级：" + className);
                System.out.println("数学总分：" + mathTotalScore);
                System.out.println("英语总分：" + englishTotalScore);
                System.out.println("语文总分：" + chineseTotalScore);
                System.out.println("学生人数：" + count);
                break;
            case 2:
                System.out.println("请选择学科：");
                System.out.println("1. 数学");
                System.out.println("2. 英语");
                System.out.println("3. 语文");

                int subjectChoice = scanner.nextInt();
                switch (subjectChoice) {
                    case 1:
                        int mathScoreTotal = 0;
                        for (Student student : students) {
                            mathScoreTotal += student.mathScore;
                        }
                        System.out.println("数学总分：" + mathScoreTotal);
                        break;
                    case 2:
                        int englishScoreTotal = 0;
                        for (Student student : students) {
                            englishScoreTotal += student.englishScore;
                        }
                        System.out.println("英语总分：" + englishScoreTotal);
                        break;
                    case 3:
                        int chineseScoreTotal = 0;
                        for (Student student : students) {
                            chineseScoreTotal += student.chineseScore;
                        }
                        System.out.println("语文总分：" + chineseScoreTotal);
                        break;
                    default:
                        System.out.println("无效操作，请重新选择！");
                        break;
                }
                break;
            default:
                System.out.println("无效操作，请重新选择！");
                break;
        }
    }

    // 分析学生成绩
    static void analyzeStudentScore() {
        int mathScoreTotal = 0;
        int englishScoreTotal = 0;
        int chineseScoreTotal = 0;
        int count = 0;
        int maxMathScore = Integer.MIN_VALUE;
        int maxEnglishScore = Integer.MIN_VALUE;
        int maxChineseScore = Integer.MIN_VALUE;
        int minMathScore = Integer.MAX_VALUE;
        int minEnglishScore = Integer.MAX_VALUE;
        int minChineseScore = Integer.MAX_VALUE;

        for (Student student : students) {
            mathScoreTotal += student.mathScore;
            englishScoreTotal += student.englishScore;
            chineseScoreTotal += student.chineseScore;

            if (student.mathScore > maxMathScore) {
                maxMathScore = student.mathScore;
            }
            if (student.englishScore > maxEnglishScore) {
                maxEnglishScore = student.englishScore;
            }
            if (student.chineseScore > maxChineseScore) {
                maxChineseScore = student.chineseScore;
            }

            if (student.mathScore < minMathScore) {
                minMathScore = student.mathScore;
            }
            if (student.englishScore < minEnglishScore) {
                minEnglishScore = student.englishScore;
            }
            if (student.chineseScore < minChineseScore) {
                minChineseScore = student.chineseScore;
            }

            count++;
        }

        double mathScoreAvg = (double) mathScoreTotal / count;
        double englishScoreAvg = (double) englishScoreTotal / count;
        double chineseScoreAvg = (double) chineseScoreTotal / count;

        System.out.println("学生数：" + count);
        System.out.println("数学平均分：" + mathScoreAvg);
        System.out.println("英语平均分：" + englishScoreAvg);
        System.out.println("语文平均分：" + chineseScoreAvg);

        System.out.println("数学最高分：" + maxMathScore);
        System.out.println("英语最高分：" + maxEnglishScore);
        System.out.println("语文最高分：" + maxChineseScore);

        System.out.println("数学最低分：" + minMathScore);
        System.out.println("英语最低分：" + minEnglishScore);
        System.out.println("语文最低分：" + minChineseScore);
    }
}

这个示例程序实现了基本的学生信息录入、查询、统计和分析功能。你可以根据自己的需求，进行修改和完善。