請協(xié)助我的代碼。數(shù)組中必須有 3 行和 4 列。用戶必須能夠為前 2 列輸入雙精度值。然后我應該能夠計算數(shù)組中每一列的總和。public class Main {    public static void main(String[] args)     {      // Implement scanner      Scanner input = new Scanner(System.in);      // Create loop for accepting matrix input      // Determine row size      System.out.println("Please enter the number 3 for the number of rows in the array:");      int row = input.nextInt();      //Rule for row not being 3      while (row != 3)      {      System.out.println("Sorry, there must be 3 rows.");      row = input.nextInt();      }      // Determine column size      System.out.println("Please enter the number 4 for the number of columns in the array:");      int column = input.nextInt();      //Rule for column not being 4      while (column != 4)      {      System.out.println("Sorry, there must be 4 columns.");      column = input.nextInt();      }      // Declare array with row and columns the user gave      int[][] userArray = new int[row][column];      //Informing user how data is inputted and saved      System.out.print("Note that the following inputs saves the numbers from left to right. So after entering 4 digits it moves onto the next row.");      System.out.println("\n");      for(int i=0;i < row ; i++)      {        for(int j=0; j< column; j++)        {         System.out.print("Please enter a value for the array:["+i+"]["+j+"]");        int val = input.nextInt();        userArray[i][j] = val;        }      }      printMatrix(userArray, row, column);    }    public static void printMatrix(int[][] array, int row, int column)    {      for (int i = 0; i < row; i++)      {        for (int j = 0; j < column; j++)        {          System.out.print(array[i][j] + " ");        }          System.out.println();      }    }}根據(jù)用戶輸入，打印輸出應該是：1.9 2.3 5 15.0 7.3 6 82.4 3.1 3 2第 1 列的總和為：9.3第 2 列的總和為：12.7第 3 列的總和為：14第 4 列的總和為：11