Java基于MySQL数据库设计是一种常见的应用开发方式。MySQL是一种开源的关系型数据库管理系统，它被广泛应用于各种应用程序中。
使用Java语言开发MySQL数据库程序通常涉及以下步骤：
1. 创建一个用于连接数据库的Java类2. 创建一个用于操作MySQL数据库表的Java类3. 编写SQL语句，实现数据的增加、删除、修改、查询等操作
以下是示例代码：
public class DatabaseConnection {private static final String URL = "jdbc:mysql://localhost:3306/test";private static final String DRIVER = "com.mysql.jdbc.Driver";private static final String USERNAME = "root";private static final String PASSWORD = "123456";private Connection connection = null;public DatabaseConnection() throws ClassNotFoundException {Class.forName(DRIVER);}public Connection getConnection() throws SQLException {if (connection == null) {connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);}return connection;}public void closeConnection() throws SQLException {if (connection != null) {connection.close();}}}public class UserDAO {private static final String TABLE_NAME = "user";private static final String INSERT_SQL = "INSERT INTO " + TABLE_NAME + " (name, age) VALUES (?, ?)";private static final String UPDATE_SQL = "UPDATE " + TABLE_NAME + " SET name=?, age=? WHERE id=?";private static final String DELETE_SQL = "DELETE FROM " + TABLE_NAME + " WHERE id=?";private static final String SELECT_SQL = "SELECT * FROM " + TABLE_NAME;private Connection connection = null;public UserDAO() throws ClassNotFoundException, SQLException {DatabaseConnection dbConnection = new DatabaseConnection();connection = dbConnection.getConnection();}public void addUser(User user) throws SQLException {PreparedStatement preparedStatement = connection.prepareStatement(INSERT_SQL);preparedStatement.setString(1, user.getName());preparedStatement.setInt(2, user.getAge());preparedStatement.executeUpdate();}public void updateUser(User user) throws SQLException {PreparedStatement preparedStatement = connection.prepareStatement(UPDATE_SQL);preparedStatement.setString(1, user.getName());preparedStatement.setInt(2, user.getAge());preparedStatement.setInt(3, user.getId());preparedStatement.executeUpdate();}public void deleteUser(int id) throws SQLException {PreparedStatement preparedStatement = connection.prepareStatement(DELETE_SQL);preparedStatement.setInt(1, id);preparedStatement.executeUpdate();}public List 以上代码示例中，首先是一个用于连接MySQL数据库的Java类DatabaseConnection，它使用了JDBC来连接数据库。然后是一个用于操作MySQL数据库表的Java类UserDAO，其中包含了增加、删除、修改、查询等基本操作的方法。这些方法使用JDBC的PreparedStatement和Statement类来执行SQL语句，实现对MySQL数据库表的操作。当然，在实际应用中，这些代码还需要进行更细致的处理，例如异常处理、资源关闭等。
