how the role of hooks and filter

Should i copy pate the below code in function.php file

add_action(‘Forms3rdPartyIntegration_service_a0’, array(&$this, ‘YOUR_CALLBACK’), 10, 2);
add_filter(‘Forms3rdPartyIntegration_service_filter_post_0’, array(&$this, ‘YOUR_FILTER’), 10, 4);

Or i need to modify above code. i m getting confuse ‘YOUR_CALLBACK’, ‘YOUR_FILTER’

if i , then wot i need to change it so it will work