Why executeQuery execute so slow

[Qen Djeng]

Why executeQuery execute so slow?,  spend 11176ms on execute 1000s executeQuery!

Is there anything wrong in my code.

public class Main {
  public static class HrSchema {
    public final Employee[] emps = new Employee[] {
        new Employee()
    };
  }
  public static void main(String[] args) throws Exception {

    Class.forName("org.apache.calcite.jdbc.Driver");
    Properties info = new Properties();
    info.setProperty("lex", "JAVA");
    Connection connection =
        DriverManager.getConnection("jdbc:calcite:", info);
    CalciteConnection calciteConnection =
        connection.unwrap(CalciteConnection.class);
    SchemaPlus rootSchema = calciteConnection.getRootSchema();
    Schema schema = new ReflectiveSchema(new HrSchema());
    rootSchema.add("hr", schema);
    Statement statement = calciteConnection.createStatement();

    long start = System.currentTimeMillis();
    for(int i = 0; i < 1000; i++) {
      ResultSet resultSet = statement.executeQuery(
          "select * from hr.emps where name = 'name'");
      while (resultSet.next()) {
      }
      resultSet.close();
    }
    System.out.println(System.currentTimeMillis() - start);
    statement.close();
    connection.close();
  }
}