New to Java

Im a couple days new in java, Ive been searching for an answer for hours and havent found a solution.
This is the mistake it shows (when trying to use any element of the array):

array required, but java.util.ArrayList <java.lang.String> found


The array is:

public static ArrayList<String> numList = new ArrayList<String>();

Im filling it this way: (so that it contains each word of a file in separate)

BufferedReader br = new BufferedReader(new FileReader("Archivo.txt"));
try
{
while(true)
{
String aLine = br.readLine();
if(aLine == null) throw new EOFException("Le?do todo el archivo.");
if(!aLine.equals(""))
{
StringTokenizer st = new StringTokenizer(aLine);
while(st.hasMoreTokens())
{
numList.add(st.nextToken());
}
}
}
}catch(EOFException e)
{

The problem comes when I try to use the elements of the array (in specific when trying to convert each element of the array to int, so that i can do math operations with them).

for example:

for (a=0; w>a; a++)
{
int x = Integer.parseInt(numList[a])
}

Can anyone help me with this? (where is the mistake and how to convert from string array elements to int)


Thank you // Muchas Gracias