Java - 逐字 rune 本文件读入二维数组

Question

我正在尝试返回数组“seats”，它本质上应该从文本文件返回数据 - 15x30 网格“#”。我已经尝试了很多东西，但我感到很沮丧，因为我对 java 的经验很少。我的代码可以编译，但在调用该方法时无法正确打印。

如果有人可以帮助修复构造函数或方法，我将不胜感激……如果有任何方法可以避免使用极其复杂的代码，我也将不胜感激。并解释!谢谢!

import java.io.IOException;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileNotFoundException;
import java.util.*;

public class TicketManager
{
    private static int NUMROWS = 15;
    private static int NUMCOLS = 30;
    private char[][] seats = new char[NUMROWS][NUMCOLS];
    private double[] price = new double[NUMROWS];
    private int seatsSold;
    private int totalRevenue;

    public TicketManager()
    {
        try
        {
            BufferedReader br = new BufferedReader(new FileReader("seatAvailability.txt"));
            String line = br.readLine();    

            while (line != null)
            {
               for (int i = 0; i < 15; i++)
               {
                   seats[i] = line.toCharArray();
               }
            }
        }
        catch(IOException exception)
        {
            System.out.println("Error processing file: " + exception);
        }
    }

    public String returnSeats()
    {
        String result = "";
        for (int i =0; i <seats.length; i++)
        {
            for (int j = 0; j < seats.length; j++)
            {
                result += seats[i][j] + " ";
            }
            System.out.println("");
        }
        return result;
    }
}

Answer 1

循环中的小问题。更新了下面的代码部分:

 public TicketManager(){
   try{
    BufferedReader br = new BufferedReader(new FileReader("seatAvailability.txt"));
       for (int i = 0; i < 15; i++)
        String line = br.readLine();    
         seats[i] = line.toCharArray();
       }
   }catch(IOException exception){
       System.out.println("Error processing file: " + exception);
   }
 }

它将读取 15 行(行)作为输入。确保在每一行中输入准确的 30 个字符。 也不要在输入行字符中使用空格，例如每行的输入应该像 X0000xx00xx0xx0xx000xx0xxx0x00

在您的 returnSeats 方法中，在内循环中使用 seats[0].length 或 seats[i].length 并将 StringBuilder 作为:

public String returnSeats(){
    StringBuilder result = new StringBuilder();
    for (int i =0; i <seats.length; i++){
        for (int j = 0; j < seats[i].length; j++){
            //append seat character in the result string
            result.append(seats[i][j]);
        }
        //append new line character in the string in between
        result.append(System.lineSeparator());
    }
    return result.toString();
}