java创建一个名为Books的数据库，并在其中建立一个名为book_message的表，字段包括书名、作者、出版社、出版时间和价格。编写一个应用程序，实现对该数据库中数据的添加、修改、删除和查询功能。

在Java中，为了创建一个名为Books的数据库和一个名为book_message的数据表，我们通常会使用JDBC（Java Database Connectivity）API。这是一个连接Java应用程序与SQL数据库的标准API。下面是一个简单的步骤概述：

首先，你需要设置JDBC驱动并连接到数据库。假设你使用的是MySQL：

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class JDBCDriver {
    private static final String URL = "jdbc:mysql://localhost:3306/Books";
    private static final String USER = "username";
    private static final String PASS = "password";

    public static Connection getConnection() throws SQLException {
        return DriverManager.getConnection(URL, USER, PASS);
    }
}

然后，你可以创建`book_message`表的SQL脚本：

CREATE TABLE book_message (
    id INT AUTO_INCREMENT PRIMARY KEY,
    title VARCHAR(255) NOT NULL,
    author VARCHAR(255),
    publisher VARCHAR(255),
    publication_date DATE,
    price DECIMAL(10, 2)
);

接下来，你可以编写四个方法分别对应添加、修改、删除和查询操作：

1. 添加（Insertion）:

public void addBook(Book book) throws SQLException {
    String sql = "INSERT INTO book_message (title, author, publisher, publication_date, price) VALUES (?, ?, ?, ?, ?)";
    try (Connection conn = JDBCDriver.getConnection();
         PreparedStatement pstmt = conn.prepareStatement(sql)) {
        pstmt.setString(1, book.getTitle());
        pstmt.setString(2, book.getAuthor());
        pstmt.setString(3, book.getPublisher());
        pstmt.setDate(4, new java.sql.Date(book.getPublicationDate().getTime()));
        pstmt.setDouble(5, book.getPrice());
        pstmt.executeUpdate();
    }
}

2. 修改（Update）:

public void updateBook(Book updatedBook) throws SQLException {
    String sql = "UPDATE book_message SET author=?, publisher=?, publication_date=?, price=? WHERE id=?";
    try (Connection conn = JDBCDriver.getConnection();
         PreparedStatement pstmt = conn.prepareStatement(sql)) {
        pstmt.setString(1, updatedBook.getAuthor());
        pstmt.setString(2, updatedBook.getPublisher());
        pstmt.setDate(3, new java.sql.Date(updatedBook.getPublicationDate().getTime()));
        pstmt.setDouble(4, updatedBook.getPrice());
        pstmt.setInt(5, updatedBook.getId());
        pstmt.executeUpdate();
    }
}

3. 删除（Deletion）:

public void deleteBook(int id) throws SQLException {
    String sql = "DELETE FROM book_message WHERE id=?";
    try (Connection conn = JDBCDriver.getConnection();
         PreparedStatement pstmt = conn.prepareStatement(sql)) {
        pstmt.setInt(1, id);
        pstmt.executeUpdate();
    }
}

4. 查询（Querying）:

public List<Book> getAllBooks() throws SQLException {
    List<Book> books = new ArrayList<>();
    String sql = "SELECT * FROM book_message";
    try (Connection conn = JDBCDriver.getConnection();
         Statement stmt = conn.createStatement();
         ResultSet rs = stmt.executeQuery(sql)) {
        while (rs.next()) {
            int id = rs.getInt("id");
            String title = rs.getString("title");
            // ... 从结果集中获取其他字段并构造Book对象
            books.add(new Book(id, title)); // 假设Book有getter方法
        }
    }
    return books;
}

这只是一个基础示例，实际应用中需要处理异常，以及使用PreparedStatement来防止SQL注入等问题。