Behaviour of ResultSet.TYPE_SCROLL_SENSITIVE

I am confused about the behaviour of a ResultSet that is of type TYPE_SCROLL_SENSITIVE.

My understanding of this is:

1. I execute a select query that returns me a result set. I print out the value of a particular column in the first row.
2. I then execute Thread.sleep(10000), which halts the program for 10 seconds.
3. While the program is sleeping, I manually do an update to the same column in the DB (through the SQL prompt).
4. After 10 seconds, I again print the value of the same column in the first row of the result set.

In step 4, I expect the printed column value to be different from the value printed in step 1. But I always get the same value (even if my ResultSet is of type SCROLL_TYPE_SENSITIVE).

Am I misunderstanding something here ?

Below is the code I use.

private void doStuff() throws Exception
{
    final String query = "select * from suppliers where sup_id=420";

    Statement stmt = this.con.createStatement(
        ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);

    ResultSet rs = stmt.executeQuery(query);

    rs.next();

    System.out.println("City : " + rs.getString("city"));

    Thread.sleep(10000); // While this executes, I do a manual update !

    System.out.println("City : " + rs.getString("city"));
}