import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.Statement;
public class Main {
private static final String DRIVER = "com.mysql.jdbc.Driver";
private static final String URL = "jdbc:mysql://localhost/testdb";
private static final String USERNAME = "root";
private static final String PASSWORD = "";
public static void main(String[] args) throws Exception {
Class.forName(DRIVER);
Connection connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);
Statement statement = connection.createStatement();
String query = "SELECT a.id, a.username, a.country_id, b.country_name " + "FROM users a "
+ "LEFT JOIN countries b ON a.country_id = b.id";
ResultSet resultSet = statement.executeQuery(query);
ResultSetMetaData metadata = resultSet.getMetaData();
String tableName = metadata.getTableName(1);
System.out.println("Table name of column 'id' = " + tableName);
tableName = metadata.getTableName(4);
System.out.println("Table name of column 'country name' = " + tableName);
}
}