The examples for DDL extension on the official website cannot run

// Some comments here
public class PlayCalciteDdl {
    public static void main(String[] args) throws Exception {
        Class.forName("org.apache.calcite.jdbc.Driver");
        Connection connection = DriverManager.getConnection("jdbc:calcite:parserFactory=org.apache.calcite.sql.parser.ddl.SqlDdlParserImpl#FACTORY");
        CalciteConnection calciteConnection = connection.unwrap(CalciteConnection.class);

        SchemaPlus rootSchema = calciteConnection.getRootSchema();
        Schema schema = new ReflectiveSchema(new HrSchema());
        rootSchema.add("hr", schema);

        Statement statement = calciteConnection.createStatement();
        statement.execute("CREATE TABLE t (i INTEGER, j VARCHAR(10))");
        statement.execute("INSERT INTO t VALUES (1, 'a'), (2, 'bc')");
        statement.execute("CREATE VIEW v AS SELECT * FROM t WHERE i > 1");

        ResultSet resultSet = statement.executeQuery("SELECT count(*) as num FROM v");
        while (resultSet.next()) {
            System.out.println(resultSet.getString("num"));
        }

        resultSet.close();
        statement.close();
        connection.close();
    }

    public static class HrSchema {
        public final Employee[] emp = new Employee[]{
                new Employee("1" , "A", "Tom"),
                new Employee("1", "B", "Lisa")
        };
        public final Department[] dept = new Department[]{new Department("1")};
    }

    public static class Employee {
        public final String deptNo;
        public final String empId;
        public final String empName;

        public Employee(String deptNo, String empId, String empName) {
            this.deptNo = deptNo;
            this.empId = empId;
            this.empName = empName;
        }
    }

    public static class Department {
        public final String deptNo;

        public Department(String deptNo) {
            this.deptNo = deptNo;
        }
    }
}

Caused by: java.lang.UnsupportedOperationException: DDL not supported: CREATE TABLE `T` (`I` INTEGER, `J` VARCHAR(10))
	at org.apache.calcite.server.DdlExecutor.lambda$static$0(DdlExecutor.java:28)
	at org.apache.calcite.prepare.CalcitePrepareImpl.executeDdl(CalcitePrepareImpl.java:370)
	at org.apache.calcite.prepare.CalcitePrepareImpl.prepare2_(CalcitePrepareImpl.java:635)

//wrong value
parserFactory=org.apache.calcite.sql.parser.ddl.SqlDdlParserImpl#FACTORY

org.apache.calcite.server.ServerDdlExecutor#PARSER_FACTORY