Java实现一个学生成绩信息管理系统，实现对学生成绩信息的添加、删除、修改、查询、统计等操作。

好的，这是一个比较复杂的问题，需要进行详细的说明和讲解。首先，我们可以采用面向对象的思想，设计一个学生类和一个成绩类，学生类包含学生的基本信息，成绩类包含学生的各个科目的成绩。然后，我们可以采用数组或者集合等数据结构来存储学生和成绩信息。接下来，我们可以实现以下功能：

1. 添加学生信息：输入学生的基本信息和各个科目的成绩，将其存储在数组或集合中。

2. 删除学生信息：根据学生的学号或姓名等信息，从数组或集合中删除对应的学生信息。

3. 修改学生信息：根据学生的学号或姓名等信息，找到对应的学生信息，可以修改学生的基本信息和各个科目的成绩。

4. 查询学生信息：根据学生的学号或姓名等信息，查询对应的学生信息和各个科目的成绩。

5. 统计学生信息：统计所有学生的总成绩、平均成绩、最高分、最低分等信息。

下面是一个简单的实现代码，供您参考：

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

public class StudentScoreManagementSystem {

    public static void main(String[] args) {
        ArrayList<Student> students = new ArrayList<>();
        Scanner scanner = new Scanner(System.in);
        int choice = 0;
        while (choice != 6) {
            System.out.println("请选择操作：");
            System.out.println("1.添加学生信息");
            System.out.println("2.删除学生信息");
            System.out.println("3.修改学生信息");
            System.out.println("4.查询学生信息");
            System.out.println("5.统计学生信息");
            System.out.println("6.退出系统");
            System.out.print("请选择操作：");
            choice = scanner.nextInt();
            switch (choice) {
                case 1:
                    addStudent(students, scanner);
                    break;
                case 2:
                    deleteStudent(students, scanner);
                    break;
                case 3:
                    modifyStudent(students, scanner);
                    break;
                case 4:
                    queryStudent(students, scanner);
                    break;
                case 5:
                    statistics(students);
                    break;
                case 6:
                    System.out.println("感谢使用学生成绩信息管理系统！");
                    break;
                default:
                    System.out.println("输入有误，请重新输入！");
                    break;
            }
        }
    }

    private static void addStudent(ArrayList<Student> students, Scanner scanner) {
        System.out.print("请输入学生的姓名：");
        String name = scanner.next();
        System.out.print("请输入学生的学号：");
        String id = scanner.next();
        System.out.print("请输入学生的性别：");
        String gender = scanner.next();
        System.out.print("请输入学生的年龄：");
        int age = scanner.nextInt();
        System.out.print("请输入学生的语文成绩：");
        double chinese = scanner.nextDouble();
        System.out.print("请输入学生的数学成绩：");
        double math = scanner.nextDouble();
        System.out.print("请输入学生的英语成绩：");
        double english = scanner.nextDouble();
        students.add(new Student(name, id, gender, age, chinese, math, english));
        System.out.println("添加成功！");
    }

    private static void deleteStudent(ArrayList<Student> students, Scanner scanner) {
        System.out.print("请输入要删除学生的学号或姓名：");
        String keyword = scanner.next();
        boolean flag = false;
        for (int i = 0; i < students.size(); i++) {
            Student student = students.get(i);
            if (student.getId().equals(keyword) || student.getName().equals(keyword)) {
                students.remove(i);
                flag = true;
                break;
            }
        }
        if (flag) {
            System.out.println("删除成功！");
        } else {
            System.out.println("未找到对应的学生信息，请重新输入！");
        }
    }

    private static void modifyStudent(ArrayList<Student> students, Scanner scanner) {
        System.out.print("请输入要修改学生的学号或姓名：");
        String keyword = scanner.next();
        boolean flag = false;
        for (int i = 0; i < students.size(); i++) {
            Student student = students.get(i);
            if (student.getId().equals(keyword) || student.getName().equals(keyword)) {
                System.out.print("请输入学生的姓名（原姓名：" + student.getName() + "）：");
                String name = scanner.next();
                System.out.print("请输入学生的学号（原学号：" + student.getId() + "）：");
                String id = scanner.next();
                System.out.print("请输入学生的性别（原性别：" + student.getGender() + "）：");
                String gender = scanner.next();
                System.out.print("请输入学生的年龄（原年龄：" + student.getAge() + "）：");
                int age = scanner.nextInt();
                System.out.print("请输入学生的语文成绩（原语文成绩：" + student.getChinese() + "）：");
                double chinese = scanner.nextDouble();
                System.out.print("请输入学生的数学成绩（原数学成绩：" + student.getMath() + "）：");
                double math = scanner.nextDouble();
                System.out.print("请输入学生的英语成绩（原英语成绩：" + student.getEnglish() + "）：");
                double english = scanner.nextDouble();
                student.setName(name);
                student.setId(id);
                student.setGender(gender);
                student.setAge(age);
                student.setChinese(chinese);
                student.setMath(math);
                student.setEnglish(english);
                flag = true;
                break;
            }
        }
        if (flag) {
            System.out.println("修改成功！");
        } else {
            System.out.println("未找到对应的学生信息，请重新输入！");
        }
    }

    private static void queryStudent(ArrayList<Student> students, Scanner scanner) {
        System.out.print("请输入要查询学生的学号或姓名：");
        String keyword = scanner.next();
        boolean flag = false;
        for (int i = 0; i < students.size(); i++) {
            Student student = students.get(i);
            if (student.getId().equals(keyword) || student.getName().equals(keyword)) {
                System.out.println("姓名：" + student.getName());
                System.out.println("学号：" + student.getId());
                System.out.println("性别：" + student.getGender());
                System.out.println("年龄：" + student.getAge());
                System.out.println("语文成绩：" + student.getChinese());
                System.out.println("数学成绩：" + student.getMath());
                System.out.println("英语成绩：" + student.getEnglish());
                flag = true;
                break;
            }
        }
        if (!flag) {
            System.out.println("未找到对应的学生信息，请重新输入！");
        }
    }

    private static void statistics(ArrayList<Student> students) {
        int count = students.size();
        double chineseSum = 0;
        double mathSum = 0;
        double englishSum = 0;
        double totalSum = 0;
        double chineseMax = 0;
        double mathMax = 0;
        double englishMax = 0;
        double totalMax = 0;
        double chineseMin = 100;
        double mathMin = 100;
        double englishMin = 100;
        double totalMin = 300;
        for (int i = 0; i < students.size(); i++) {
            Student student = students.get(i);
            chineseSum += student.getChinese();
            mathSum += student.getMath();
            englishSum += student.getEnglish();
            totalSum += student.getTotal();
            chineseMax = Math.max(chineseMax, student.getChinese());
            mathMax = Math.max(mathMax, student.getMath());
            englishMax = Math.max(englishMax, student.getEnglish());
            totalMax = Math.max(totalMax, student.getTotal());
            chineseMin = Math.min(chineseMin, student.getChinese());
            mathMin = Math.min(mathMin, student.getMath());
            englishMin = Math.min(englishMin, student.getEnglish());
            totalMin = Math.min(totalMin, student.getTotal());
        }
        double chineseAvg = chineseSum / count;
        double mathAvg = mathSum / count;
        double englishAvg = englishSum / count;
        double totalAvg = totalSum / count;
        System.out.println("总人数：" + count);
        System.out.println("语文总分：" + chineseSum + "，语文平均分：" + chineseAvg + "，语文最高分：" + chineseMax + "，语文最低分：" + chineseMin);
        System.out.println("数学总分：" + mathSum + "，数学平均分：" + mathAvg + "，数学最高分：" + mathMax + "，数学最低分：" + mathMin);
        System.out.println("英语总分：" + englishSum + "，英语平均分：" + englishAvg + "，英语最高分：" + englishMax + "，英语最低分：" + englishMin);
        System.out.println("总分总分：" + totalSum + "，总分平均分：" + totalAvg + "，总分最高分：" + totalMax + "，总分最低分：" + totalMin);
    }
}

class Student {
    private String name;
    private String id;
    private String gender;
    private int age;
    private double chinese;
    private double math;
    private double english;

    public Student(String name, String id, String gender, int age, double chinese, double math, double english) {
        this.name = name;
        this.id = id;
        this.gender = gender;
        this.age = age;
        this.chinese = chinese;
        this.math = math;
        this.english = english;
    }

    public String getName() {
        return name;
    }

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

    public String getId() {
        return id;
    }

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

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public int getAge() {
        return age;
    }

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

    public double getChinese() {
        return chinese;
    }

    public void setChinese(double chinese) {
        this.chinese = chinese;
    }

    public double getMath() {
        return math;
    }

    public void setMath(double math) {
        this.math = math;
    }

    public double getEnglish() {
        return english;
    }

    public void setEnglish(double english) {
        this.english = english;
    }

    public double getTotal() {
        return chinese + math + english;
    }
}

以上就是一个简单的学生成绩信息管理系统的实现，您可以根据自己的需求进行修改和完善。