Question

以下代码用于读取Java中现有的Excel文件。

我想使用[[a, b], [b, c, d], [a, c, d, e], [a, d, e], [a, b, c], [a, b, c, d], [a], [a, b, c], [a, b, d], [b, c, e]]...，其中[a, b]引用了Excel文件中的一行。请帮助我。

public class Excel {

    public static void main(String[] args) throws FileNotFoundException {
        List<Set<String>> itemsetList = new ArrayList<>();
        Scanner scanner = new Scanner(new File("bc_dataset.csv"));
        scanner.next();
        while (scanner.hasNext()) {
            String str = scanner.next();
            itemsetList.add(new HashSet<>(Arrays.asList(str.split(","))));
            System.out.println(itemsetList);
        }

        scanner.close();
    }
}

Answer 1

按如下所示更改代码：

public class Excel {

   public static void main(String[] args) throws FileNotFoundException {
       List<Set<String>> itemsetList = new ArrayList<>();
       Scanner scanner = new Scanner(new File("bc_dataset.csv"));
       while (scanner.hasNextLine()) {
           String str = scanner.nextLine();
           itemsetList.add(new HashSet<>(Arrays.asList(str.split(","))));
       }
       System.out.println(itemsetList);
       scanner.close();
   }
}

如何将Excel中的行放入Java中的ArrayList中？

1 个答案: