如何在Java中创建Oracle数据库中的创建表和修改数据的程序，并具有多种用途

import java.sql.*;

public class OracleDatabaseExample {
    public static void main(String[] args) {
        // JDBC连接信息
        String url = "jdbc:oracle:thin:@localhost:1521:xe";
        String username = "your_username";
        String password = "your_password";

        // 加载JDBC驱动程序
        try {
            Class.forName("oracle.jdbc.driver.OracleDriver");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }

        // 创建数据库连接
        try (Connection connection = DriverManager.getConnection(url, username, password)) {
            System.out.println("成功连接到Oracle数据库");

            // 创建表
            createTable(connection);

            // 修改数据
            updateData(connection);

        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    // 创建表
    private static void createTable(Connection connection) throws SQLException {
        String createTableQuery = "CREATE TABLE employees (id NUMBER, name VARCHAR2(50))";
        try (Statement statement = connection.createStatement()) {
            statement.executeUpdate(createTableQuery);
            System.out.println("成功创建表");
        }
    }

    // 修改数据
    private static void updateData(Connection connection) throws SQLException {
        String updateDataQuery = "INSERT INTO employees VALUES (1, 'John')";
        try (Statement statement = connection.createStatement()) {
            statement.executeUpdate(updateDataQuery);
            System.out.println("成功修改数据");
        }
    }
}