write static methods for the following:

countOf $-$ This method should take an integer, target, and an ArrayList of integer, nums, as formal parameters and should return an int indicating the number of times target appears in nums. If the given target is less than $0,$ then the method should return $-1.$

Example: countOf$(2,[4,2,0,2,2])$ should return the number $3($as the target number $2$ appears $3$ times in the list$).$

call it from the main at least once.