完整的Java代码实现

由于学生信息管理系统的具体实现涉及到很多细节和具体情况，因此无法提供完整的Java代码实现。以下是一个简单的示例代码，供参考：

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

public class StudentInformationManagementSystem {

    private List<Student> studentList = new ArrayList<>();

    public void addStudent(Student student) {
        studentList.add(student);
    }

    public void deleteStudent(Student student) {
        studentList.remove(student);
    }

    public void updateStudent(Student student) {
        for (Student s : studentList) {
            if (s.getId().equals(student.getId())) {
                s.setName(student.getName());
                s.setAge(student.getAge());
                s.setGender(student.getGender());
                s.setScore(student.getScore());
                break;
            }
        }
    }

    public Student queryStudent(String id) {
        for (Student student : studentList) {
            if (student.getId().equals(id)) {
                return student;
            }
        }
        return null;
    }

    public List<Student> getStudentList() {
        return studentList;
    }

    public void setStudentList(List<Student> studentList) {
        this.studentList = studentList;
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        StudentInformationManagementSystem system = new StudentInformationManagementSystem();

        while (true) {
            System.out.println("请选择操作：1.添加学生 2.删除学生 3.修改学生信息 4.查询学生信息 5.退出程序");
            int option = scanner.nextInt();
            switch (option) {
                case 1:
                    System.out.println("请输入学生信息：");
                    System.out.println("学号：");
                    String id = scanner.next();
                    System.out.println("姓名：");
                    String name = scanner.next();
                    System.out.println("年龄：");
                    int age = scanner.nextInt();
                    System.out.println("性别：");
                    String gender = scanner.next();
                    System.out.println("成绩：");
                    int score = scanner.nextInt();
                    Student student = new Student(id, name, age, gender, score);
                    system.addStudent(student);
                    System.out.println("添加成功！");
                    break;
                case 2:
                    System.out.println("请输入学生学号：");
                    String deleteId = scanner.next();
                    Student deleteStudent = system.queryStudent(deleteId);
                    if (deleteStudent != null) {
                        system.deleteStudent(deleteStudent);
                        System.out.println("删除成功！");
                    } else {
                        System.out.println("学号为" + deleteId + "的学生不存在！");
                    }
                    break;
                case 3:
                    System.out.println("请输入学生学号：");
                    String updateId = scanner.next();
                    Student updateStudent = system.queryStudent(updateId);
                    if (updateStudent != null) {
                        System.out.println("请输入学生信息：");
                        System.out.println("姓名：");
                        String updateName = scanner.next();
                        System.out.println("年龄：");
                        int updateAge = scanner.nextInt();
                        System.out.println("性别：");
                        String updateGender = scanner.next();
                        System.out.println("成绩：");
                        int updateScore = scanner.nextInt();
                        updateStudent.setName(updateName);
                        updateStudent.setAge(updateAge);
                        updateStudent.setGender(updateGender);
                        updateStudent.setScore(updateScore);
                        System.out.println("修改成功！");
                    } else {
                        System.out.println("学号为" + updateId + "的学生不存在！");
                    }
                    break;
                case 4:
                    System.out.println("请输入学生学号：");
                    String queryId = scanner.next();
                    Student queryStudent = system.queryStudent(queryId);
                    if (queryStudent != null) {
                        System.out.println("学号：" + queryStudent.getId());
                        System.out.println("姓名：" + queryStudent.getName());
                        System.out.println("年龄：" + queryStudent.getAge());
                        System.out.println("性别：" + queryStudent.getGender());
                        System.out.println("成绩：" + queryStudent.getScore());
                    } else {
                        System.out.println("学号为" + queryId + "的学生不存在！");
                    }
                    break;
                case 5:
                    System.out.println("程序已退出！");
                    System.exit(0);
                default:
                    System.out.println("输入有误，请重新输入！");
            }
        }
    }
}

class Student {

    private String id;
    private String name;
    private int age;
    private String gender;
    private int score;

    public Student(String id, String name, int age, String gender, int score) {
        this.id = id;
        this.name = name;
        this.age = age;
        this.gender = gender;
        this.score = score;
    }

    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 int getAge() {
        return age;
    }

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

    public String getGender() {
        return gender;
    }

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

    public int getScore() {
        return score;
    }

    public void setScore(int score) {
        this.score = score;
    }
}

该示例代码实现了学生信息的添加、删除、修改和查询等基本功能，基于命令行界面进行操作。但需要注意的是，实际情况下，学生信息管理系统需要考虑更多的细节和实现方式，如用户权限管理、数据存储方式、数据备份和恢复等。