> Now I did it and you're right, the error is gone.

Ok.

> But still, it doesn't insert the value I entered, inserting something like
> [B@4fdf11... apparently everything I did is right, but if it doesn't work
> is because it isn't right :)

Can you give me a standalone reproducable test case? The [B@... means that
for some reason byte[] was converted to a string (for example in some
System.println(...) method).

Roman