Question

我有一个Object 2维数组，让我们说Result [] []其中我有2列和多行（动态依赖于数据库）。现在作为一列我每行有1个数组让我们说结果。

Example:      column column  column
              1      hello   1,2,3,4
              2      hi      4,3,2,1
              3      bye     5,2,1,3,6

所以我需要一个对象作为二维Array对象中的一列。我没有摆脱问题。

我的代码是：

public Object[][] getGroupDetails(String org_id, Object[][] result) {
    Object[][] result2 = null;
    Object[][] list = null;
    System.out.println(result.length);
    Integer len = result.length;
    //String groups_id="";
    try {
        Integer i = 0;
        while (i < len) {

            String getBelongingGroupsList = "SELECT DISTINCT groups.GROUPS_NAME, groups.GROUPS_ID FROM groups LEFT JOIN member "
                    + "ON member.GROUPS_ID=groups.GROUPS_ID WHERE groups.org_id=" + org_id + " AND member.member_number =" + result[i][1];
            System.out.println("getBelongingGroupsList  " + getBelongingGroupsList);
            ResultSet rscheck = (ResultSet) DataService.getResultSet(getBelongingGroupsList);
            list = (Object[][]) DataService.getDataFromResultSet(rscheck);
            System.out.println("list made");
            System.out.println(list.length);//not executing bhai kya hua teko
            for (int j = 0; j < list.length; j++) {
                System.out.println("copying list to object ");
                result[i][j] = list[j][0];
            }
            //System.out.println(result2[i].length);
            //groups_id = rscheck.getString("groups_id");
            i++;

        }
    } catch (Exception e) {
        e.printStackTrace();
    }

    return result;
}

Answer 1

您可以尝试以下方法。它还存储结果索引。如果这有帮助，请告诉我。

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

    col = new String[3];        
    col[0] = "1";
    col[1] = "hello";
    col[2] = "1,2,3,4";
    list.add(col);

    col = new String[3];
    col[0] = "2"; 
    col[1] = "hi";
    col[2] = "4,3,2,1";
    list.add(col);


    for(String[] objs : list){
        for(String str : objs){
            System.out.print(str + "\t");
        }
        System.out.println();
    }

输出将是：

1   hello   1,2,3,4 
2   hi      4,3,2,1

对象2D数组中的对象数组

1 个答案: