Neo4j-JDBC Driver only returns one row - neo4j

Question

I'm using the Neo4j JDBC driver 2.0.1.
When I run the following query on by browser, I get the right data back.
MATCH (u:Person) RETURN u.name, u.lastname
I am executing this statement with the NeoJDBC driver (I am connected to the db, otherwise I would not have been able to create nodes before):
public static ResultSet executeCypher(String query)
{
try (Statement stmt = TestUtils.connection.createStatement())
{
return stmt.executeQuery(query);
}
catch (SQLException e)
{
System.out.println(e.getMessage() + "\n\n" + e.getCause().toString() + "\n\n" + e.getErrorCode());
}
}
When I'm iterating over the result set, there are 2 colums as expected. But only one row in the result set. I wrote this according to the minimum viable snippet:
//create some users here
//...
//check the database content
ResultSet rs = TestUtils.executeCypher("MATCH (u:Person) RETURN u.name, u.lastname");
while(rs.next())
{
System.out.println(rs.getString("u.name"));
System.out.println("print anything for test purposes");
}
Output:
Executing query: MATCH (u:Person) RETURN u.name as name, u.lastname
as lastname with params {} Starting the Apache HTTP client
John
print anything for test purposes
Why do I only get one row back although it should return multiple rows? I found some data in the "data" field of the ResultSet while debugging (see also Michael Hunger's answer here) where the "last" property is false. So I guess there is more data. But I don't know how to extract it.
How can I get all the data that is in the ResultSet (using an iterator)?