Counting records in resultset

Question

I am doing SQL statements just fine but how can I count the records that would be returned? For example if I had this:
SELECT * FROM tablename WHERE num=2
I was trying this:
SELECT COUNT(*) FROM tablename WHERE num=2
I was using this:
ResultSet SQLResult = SQLStatement.executeQuery(Query);
But how can I get the number of records returned?

Answer 1

I now have:
ResultSet SQLResult = SQLStatement.executeQuery(QueryCount);
if (SQLResult.next()){
SQLResult.getInt(1)}
How can I dump the count into a variable called adCount?
I have never used this before, would I do
adCount=SQLResult.getInt(1)?