学生贯籍信息记录簿设计

Question

编制一个学生籍贯信息记录簿，每个学生信息包括：学号、姓名、籍贯。具体功能如下：
（1）创建学生信息并以磁盘文件保存；
（2）读取磁盘文件并显示输出所有学生的籍贯信息；
（3）按学号或姓名查询成绩；
（4）按籍贯查询并输出该籍贯的所有学生；
（5）能添加、删除和修改学生的籍贯信息（可选项）；

Answer 1

引用new bing作答：
以下是一个 Java 实现的学生籍贯信息记录簿，实现了上述功能：

import java.io.*;
import java.util.*;

class Student implements Serializable {
    private int id;
    private String name;
    private String address;

    public Student(int id, String name, String address) {
        this.id = id;
        this.name = name;
        this.address = address;
    }

    public int getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public String getAddress() {
        return address;
    }

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

    public String toString() {
        return "ID: " + id + "\tName: " + name + "\tAddress: " + address;
    }
}

public class StudentRecord {
    private static ArrayList<Student> students = new ArrayList<Student>();
    private static Scanner scanner = new Scanner(System.in);

    private static void save() {
        try {
            FileOutputStream fileOut = new FileOutputStream("students.ser");
            ObjectOutputStream out = new ObjectOutputStream(fileOut);
            out.writeObject(students);
            out.close();
            fileOut.close();
            System.out.println("Student records saved to file students.ser");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static void load() {
        try {
            FileInputStream fileIn = new FileInputStream("students.ser");
            ObjectInputStream in = new ObjectInputStream(fileIn);
            students = (ArrayList<Student>) in.readObject();
            in.close();
            fileIn.close();
            System.out.println("Student records loaded from file students.ser");
        } catch (IOException e) {
            System.out.println("No saved student records found");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
    }

    private static void addStudent() {
        System.out.println("Enter student ID:");
        int id = scanner.nextInt();
        scanner.nextLine();
        System.out.println("Enter student name:");
        String name = scanner.nextLine();
        System.out.println("Enter student address:");
        String address = scanner.nextLine();
        students.add(new Student(id, name, address));
        save();
    }

    private static void deleteStudent() {
        System.out.println("Enter student ID:");
        int id = scanner.nextInt();
        scanner.nextLine();
        for (Student student : students) {
            if (student.getId() == id) {
                students.remove(student);
                System.out.println("Student with ID " + id + " deleted");
                save();
                return;
            }
        }
        System.out.println("No student with ID " + id + " found");
    }

    private static void modifyStudent() {
        System.out.println("Enter student ID:");
        int id = scanner.nextInt();
        scanner.nextLine();
        for (Student student : students) {
            if (student.getId() == id) {
                System.out.println("Enter new student address:");
                String address = scanner.nextLine();
                student.setAddress(address);
                System.out.println("Student with ID " + id + " modified");
                save();
                return;
            }
        }
        System.out.println("No student with ID " + id + " found");
    }

    private static void displayAllStudents() {
        for (Student student : students) {
            System.out.println(student);
        }
    }

    private static void displayStudentsByLocation() {
        System.out.println("Enter location:");
        String location = scanner.nextLine();
        boolean found = false;
        for (Student student : students) {
            if (student.getAddress().equalsIgnoreCase(location)) {
                System.out.println(student);
                found = true;
            }
        }
        if (!found) {
System.out.println("No students found in " + location);
}
}
private static void searchStudent() {
    System.out.println("Enter student ID or name:");
    String input = scanner.nextLine();
    boolean found = false;
    for (Student student : students) {
        if (student.getId() == Integer.parseInt(input) || student.getName().equalsIgnoreCase(input)) {
            System.out.println(student);
            found = true;
        }
    }
    if (!found) {
        System.out.println("No student found with ID or name " + input);
    }
}

public static void main(String[] args) {
    load();
    while (true) {
        System.out.println("\nWhat would you like to do?");
        System.out.println("1. Add a student");
        System.out.println("2. Delete a student");
        System.out.println("3. Modify a student");
        System.out.println("4. Display all students");
        System.out.println("5. Display students by location");
        System.out.println("6. Search for a student");
        System.out.println("0. Exit");
        int choice = scanner.nextInt();
        scanner.nextLine();
        switch (choice) {
            case 1:
                addStudent();
                break;
            case 2:
                deleteStudent();
                break;
            case 3:
                modifyStudent();
                break;
            case 4:
                displayAllStudents();
                break;
            case 5:
                displayStudentsByLocation();
                break;
            case 6:
                searchStudent();
                break;
            case 0:
                System.exit(0);
            default:
                System.out.println("Invalid choice");
        }
    }
}
}

该程序使用了一个 Student 类来表示每个学生，包含学号、姓名和籍贯。使用 ArrayList 来存储所有学生的信息，并使用序列化将其保存到磁盘文件中。

在主方法中，使用一个 while 循环来处理用户的不同操作选择。用户可以选择添加、删除、修改学生信息，或者查询所有学生信息或者按照籍贯查询学生信息。还可以搜索学生信息，通过输入学号或姓名来查找相应的学生。

该程序实现了一个基本的学生籍贯信息记录簿，可以根据需要进行扩展和改进。