要在Java代碼中添加Hive數據庫，你可以使用Java JDBC API與Hive的JDBC驅動程序進行交互。以下是示例代碼，演示如何連接到Hive并添加數據庫：
import java.sql.*;
public class HiveDatabaseAddition {
????private?static?String?driverName?=?“org.apache.hive.jdbc.HiveDriver”;
????private?static?String?connectionString?=?“jdbc:hive2://localhost:10000/default”;
????private?static?String?username?=?“your_username”;
????private?static?String?password?=?“your_password”;
????public?static?void?main(String[]?args)?{
????????try?{
????????????//?加載Hive的JDBC驅動程序
????????????Class.forName(driverName);
????????????//?建立連接
????????????Connection?connection?=?DriverManager.getConnection(connectionString,?username,?
????????????password);
????????????//?創建一個Statement對象
????????????Statement?statement?=?connection.createStatement();
????????????//?執行添加數據庫的SQL語句
????????????String?databaseName?=?“your_database_name”;
????????????String?addDatabaseQuery?=?"CREATE?DATABASE?"?+?databaseName;
????????????statement.execute(addDatabaseQuery);
????????????System.out.println(“Database?added?successfully.”);
????????????//?關閉連接
????????????statement.close();
????????????connection.close();
????????}?catch?(Exception?e)?{
????????????e.printStackTrace();
????????}
????}
}
在以上代碼中，你需要將your_username和your_password替換為你的Hive用戶名和密碼，your_database_name替換為你想要添加的數據庫名稱。
請確保你已經將Hive的JDBC驅動程序添加到你的Java項目的類路徑中。你可以從Apache Hive的官方網站下載并獲取JDBC驅動程序。
此外，還需要確保HiveServer2正在運行，并且連接字符串jdbc:hive2://localhost:10000/default中的主機和端口與你的HiveServer2的設置一致。
