利用 Vector数据结构、对象序列化、输入输出流设计并编写一个命令行图书管理系统Java应用程序，具备以下功能：1）打印系统列表（书号，作者姓名，标题，出版社，定价）；2）增加一本新书；3）查找一本书；4）删除一本书；5）离开系统；6）保存系统数据到文件中；7）从文件中加载旧数据。

好的，我会为您提供一个基本的命令行图书管理系统的Java应用程序。

首先，我们需要定义一个Book类，该类包含书号、作者姓名、标题、出版社和定价等属性，代码如下：

import java.io.Serializable;

public class Book implements Serializable {
    private int bookNumber;
    private String authorName;
    private String title;
    private String publisher;
    private double price;

    public Book(int bookNumber, String authorName, String title, String publisher, double price) {
        this.bookNumber = bookNumber;
        this.authorName = authorName;
        this.title = title;
        this.publisher = publisher;
        this.price = price;
    }

    public int getBookNumber() {
        return bookNumber;
    }

    public void setBookNumber(int bookNumber) {
        this.bookNumber = bookNumber;
    }

    public String getAuthorName() {
        return authorName;
    }

    public void setAuthorName(String authorName) {
        this.authorName = authorName;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getPublisher() {
        return publisher;
    }

    public void setPublisher(String publisher) {
        this.publisher = publisher;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        this.price = price;
    }
}

接下来，我们需要定义一个BookManager类，该类包含以下方法：

1. 打印系统列表：printBookList()
2. 增加一本新书：addBook()
3. 查找一本书：findBook()
4. 删除一本书：deleteBook()
5. 保存系统数据到文件中：saveToFile()
6. 从文件中加载旧数据：loadFromFile()

代码如下：

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

public class BookManager {
    private List<Book> bookList = new ArrayList<>();

    public void printBookList() {
        System.out.println("书号\t作者姓名\t标题\t出版社\t定价");
        for (Book book : bookList) {
            System.out.println(book.getBookNumber() + "\t" + book.getAuthorName() + "\t" + book.getTitle() + "\t" + book.getPublisher() + "\t" + book.getPrice());
        }
    }

    public void addBook() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入书号：");
        int bookNumber = scanner.nextInt();
        scanner.nextLine(); // 读取换行符
        System.out.print("请输入作者姓名：");
        String authorName = scanner.nextLine();
        System.out.print("请输入书名：");
        String title = scanner.nextLine();
        System.out.print("请输入出版社：");
        String publisher = scanner.nextLine();
        System.out.print("请输入定价：");
        double price = scanner.nextDouble();
        Book book = new Book(bookNumber, authorName, title, publisher, price);
        bookList.add(book);
        System.out.println("添加成功！");
    }

    public void findBook() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入要查找的书号：");
        int bookNumber = scanner.nextInt();
        for (Book book : bookList) {
            if (book.getBookNumber() == bookNumber) {
                System.out.println("书号\t作者姓名\t标题\t出版社\t定价");
                System.out.println(book.getBookNumber() + "\t" + book.getAuthorName() + "\t" + book.getTitle() + "\t" + book.getPublisher() + "\t" + book.getPrice());
                return;
            }
        }
        System.out.println("没有找到该书！");
    }

    public void deleteBook() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入要删除的书号：");
        int bookNumber = scanner.nextInt();
        for (Book book : bookList) {
            if (book.getBookNumber() == bookNumber) {
                bookList.remove(book);
                System.out.println("删除成功！");
                return;
            }
        }
        System.out.println("没有找到该书！");
    }

    public void saveToFile() {
        try {
            ObjectOutputStream outputStream = new ObjectOutputStream(new FileOutputStream("book.dat"));
            outputStream.writeObject(bookList);
            outputStream.close();
            System.out.println("保存成功！");
        } catch (IOException e) {
            System.out.println("保存失败：" + e.getMessage());
        }
    }

    public void loadFromFile() {
        try {
            ObjectInputStream inputStream = new ObjectInputStream(new FileInputStream("book.dat"));
            bookList = (List<Book>) inputStream.readObject();
            inputStream.close();
            System.out.println("加载成功！");
        } catch (IOException | ClassNotFoundException e) {
            System.out.println("加载失败：" + e.getMessage());
        }
    }
}

最后，我们需要定义一个Main类，该类包含以下方法：

1. 主菜单：mainMenu()
2. 选择操作：selectOperation()

代码如下：

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        BookManager bookManager = new BookManager();
        bookManager.loadFromFile(); // 从文件中加载旧数据
        mainMenu(bookManager); // 显示主菜单
    }

    public static void mainMenu(BookManager bookManager) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("欢迎使用图书管理系统！");
        while (true) {
            System.out.println("请选择操作：");
            System.out.println("1. 打印系统列表");
            System.out.println("2. 增加一本新书");
            System.out.println("3. 查找一本书");
            System.out.println("4. 删除一本书");
            System.out.println("5. 保存系统数据到文件中");
            System.out.println("6. 从文件中加载旧数据");
            System.out.println("0. 离开系统");
            int choice = scanner.nextInt();
            switch (choice) {
                case 1:
                    bookManager.printBookList();
                    break;
                case 2:
                    bookManager.addBook();
                    break;
                case 3:
                    bookManager.findBook();
                    break;
                case 4:
                    bookManager.deleteBook();
                    break;
                case 5:
                    bookManager.saveToFile();
                    break;
                case 6:
                    bookManager.loadFromFile();
                    break;
                case 0:
                    bookManager.saveToFile(); // 保存数据到文件中
                    System.out.println("Goodbye!");
                    System.exit(0);
                default:
                    System.out.println("无效的选择，请重新输入！");
            }
        }
    }
}

现在，我们已经完成了一个基本的命令行图书管理系统的Java应用程序。您可以根据自己的需求进行修改和扩展。