使用Scanner从ArrayList到二维数组的java字符串

Question

我正在使用Eclipse，我正在尝试获取一个字符串：

1 2 3 4

从ArrayList中：

ArrayList strings = new ArrayList<>();

并将每个数字存储到二维数组中：

int size = (int) strings.get(0); // Represents the number of rows
int stringList[][] = new int[size][];

// Store results in a two dimensional array
for(int i = 0; i < size; i++){
    int index = i + 1; 
    String fish = (String) strings.get(index);

    Scanner npt = new Scanner(fish);

    for(int j = 0; npt.hasNext(); j++) {
        size[i][j] = Integer.parseInt(npt.next());
    }
}

这是导致错误的部分：

// ERROR: The type of the expression must be an array type but it resolved to int
size[i][j] = Integer.parseInt(npt.next());