Solution: Count Element Occurrence

class Count {
 public static int calcFreq(int arr[], int key) {
  int count = 0;
  //traversing the array
  for (int i = 0; i < arr.length; i++) {
   //checking if current index value matches key
   if (arr[i] == key)
    //incrementing count if it does
    count++;
  }
  return count;
 }
 public static void main(String args[]) {
  int arr[] = {-5,-3,0,1,3,3,3,3,4,5};
  int key = 3;
  System.out.println("The key \"" + key + "\" occurs " + calcFreq(arr, key) + " times in the Array.");
 }
}