sql jdbc getgeneratedkeys gibt die Spalte "id" nicht gefunden wird, Spalte Typ unbekannt

Möchte ich zum abrufen der zuletzt aktualisierte Wert in der Tabelle mit einer insert-Abfrage.

diese sind die Datentypen in meine sql-Tabelle.

Datentyp:

int(11)      //primary key auto increment, not being assigned by sqlQuery
varchar(30)
timestamp    //has a default value. but i am explicit assigning it using CURRENT_TIMESTAMP
varchar(300)
varchar(300)
varchar(300)
int(11)
varchar(300)

java-code

   statement.executeUpdate(sqlQuery, Statement.RETURN_GENERATED_KEYS);
   ResultSet rs = statement.getGeneratedKeys();
   System.out.println("here: " + rs.getMetaData().getColumnCount());
   System.out.println("here1: " + rs.getMetaData().getColumnName(1));
   //none of the following 3 works
   System.out.println("id: " + rs.getInt(1));
   System.out.println("id: " + rs.getInt("GENERATED_KEY"));
   System.out.println("id: " + rs.getInt("id"));
   for a bit of background see [this][1]
  `rs.getMetaData().getColumnTypeName(1)` tells me column type `UNKNOWN`

stack-trace

    SEVERE: null
    java.sql.SQLException
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:926)
    at com.mysql.jdbc.ResultSetImpl.checkRowPos(ResultSetImpl.java:815)
    at com.mysql.jdbc.ResultSetImpl.getStringInternal(ResultSetImpl.java:5528)
    at com.mysql.jdbc.ResultSetImpl.getString(ResultSetImpl.java:5448)
  [1]: http://stackoverflow.com/questions/2853066/sql-java-get-value-assigned-to-auto-increment-primary-key