Find Largest Number in Array

public static int findLargestNumberIn(int...x){
   int max = intArray[0];
   for (int x : intArray) {
      if (x > max) max = x;
   }
   return max;
}

public static void main(String[] args) {
  int largestNumber = findLargestNumberIn(1,2,3,4,5);
  System.out.println("Largest Number is: "+largestNumber);
}