“Type Mismatch: Cannot Convert from int to ResultSet” [duplicate]

Answer 1

1. ExecuteUpdate returns int - for update, insert and delete operations 
where the result is expected to be int ( Number of rows affected )

2. ExecuteQuery returns resultset - useful for query statements (eg. select * from table) 
where result type is resultset (data from the table)

3. execute returns boolean - when you do not know what function to use for your 
query or for unknown dynamic sql use this function.
It returns true if result is a resultSet and false if answer is an updateCount 
or no results founds

Hope this helps!!!

Answer 2

executeUpdate returns the number of rows affected in the query. The notion of a ResultSet for a database write operation makes no sense

int rows = statement.executeUpdate
     ("DELETE FROM record_artist WHERE high_chart_pos < " + rank + ";");