java find largest number in list

List<Integer> myList = new ArrayList<>();

for(int i = 0; i < 10; i++){
    myList.add(i);
}
//gets highest number in the list
int highestNumber = Collections.max(myList);

System.out.Println(highestNumber);

//output: 9

for (int counter = 1; counter < decMax.length; counter++)
{
     if (decMax[counter] > max)
     {
      max = decMax[counter];
     }
}

System.out.println("The highest maximum for the December is: " + max);

int max = (The provided List).stream().max((i1,i2)->(i1>i2)?1:(i1<i2)-1:0).get();