Based on the cursor scroll behavior, there are 3 types.
ResultSet.TYPE_FORWARD_ONLY, the default type where cursor can only move forward in the result set.
ResultSet.TYPE_SCROLL_INSENSITIVE cursor can move forward and backward, and the resultset is insensitive to changes made by others to the database after the result set was created.
ResultSet.TYPE_SCROLL_SENSITIVE, the cursor can move In both direction, and the result set is sensitive to changes made by others to the database after the result set has been created.
Based on the concurrency there are 2 types of ResultSet object.
ResultSet.CONCUR_READ_ONLY: The result set is read only, this is the default concurrency type.
ResultSet.CONCUR_UPDATABLE: We can use ResultSet update method to update the row data.