I have been trying to figure out how to add one number in an array to another number in an array. I parsed the numbers in a String into integers, and separated them by columns. Then, I added each column into an array. 

What I would like to solve is how to add all the numbers in a column.

The numbers are from a text file. 

```
// numbers.txt: 

Bob, 100, 98, 95
Alex, 85, 90, 92

```

I already used bufferedReader and parsed the numbers, from String to int.

The challenge is adding the numbers by column. 

For example, if there are 3 numbers in each array, I just want to add the first numbers in each array. 

Q1 is [100, 98, 95]
Q2 is [85, 90, 92] 

Only 100 + 85 together. 

Below are the codes that I have so far. 
Any help on how to proceed will be awesome! Thanks for your time. 

```
int Q1 = Integer.parseInt(columns[1]);
int Q2 = Integer.parseInt(columns[2]);

ArrayList<Integer> Q1list = new ArrayList<>();
Q1list.add(Q1);
Q1list.add(Q2);

double total = 0.0;

for (int i = 0; i < Q1list.size(); i++) {
total += Q1list.get(i);
}

System.out.println(total);

```