将字符串数组添加到数组字符串的数组列表中

So in my program I split the first row of data imported by a csv file into an array. Is there anyway that I can add this array into an array list as the first element? Because once I split the second data into an array by a delimiter I then want to store this array in the same arraylist but in element 2. A bit confusing but to summarize is nested arrays in an arraylist possible?So in my program I split the first row of data