java - ResultSet .next was not called exception is thrown

Question

I have query like this

String sql_query = select name, display_name from parameter where id = (something);

After executing this query I retrieved the ResultSet, and then I'm trying to update the value display_name. It's not working and throwing an Exception

.next was not called.

rs = stmt.executeQuery(sql_query);
String displayName = rs.getString(display_name);
displayName = displayName.replace("&lt;", "<");
rs.updateString(display_name,display name);

Answer 1

The problem is exactly what it says in the error message. ResultSet.next() wasn't called. So call it. Not forgetting to check the return value.