将2D数组添加到数组的数组列表

Question

编辑：数组列表声明：

List<String> shapeList = new ArrayList<String>();

我正在尝试使用数组列表创建一个2D数组数组。

shapeList.add(drawBoxClassObject.drawBox(l));

其中drawBoxClassObject.drawBox（l）;返回一个二维字符串数组，这一行给出了这个错误：

no suitable method found for add(String[][])
method Collection.add(String) is not applicable
  (argument mismatch; String[][] cannot be converted to String)
method List.add(String) is not applicable
  (argument mismatch; String[][] cannot be converted to String)

如何将二维字符串数组本身存储在一维字符串数组中（我认为可以修复它不能转换为字符串）？

Answer 1

从

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shapeList

到

List<String> shapeList = new ArrayList<>();

Answer 2

您的错误表明您的shapeList初始化有点像这样：

List<String> shapeList = new ArrayList<>();

但是如果你想存储drawBoxClassObject，那么你需要更改声明以接受2D字符串数组，如下所示：

List<String[][]> shapeList = new ArrayList<>();

Answer 3

这应该有效：

    List<String[][]> shapeList = new ArrayList<String[][]>();

你把String [] []放在一个字符串上。