java - 读取文本文件，然后将其拆分为不同的数组

Question

所以我尝试使用 BufferedReader 将文本文件拆分为 2 个不同的数组，我已经编写了一些代码，但我不确定从哪里开始。

我知道如何填充数组，但我似乎无法获取特定的行。

因此，NEW_OFFICE 的一个数组仅包含数字，MAIN_ADDRESS 的一个数组仅包含其下方的数字。

BufferedReader in = null;
try {
    in = new BufferedReader(new FileReader("myDelivery.txt"));
    String read = null;
    while ((read = in.readLine()) != null) {
        String words = read.split("NEW_OFFICE")[0];
    }
} catch (IOException e) {
    System.out.println("There was a problem: " + e);
    e.printStackTrace();
} finally {
    try {
        in.close();
    } catch (Exception ignored) { }
}

这是文本文件:

NEW_OFFICE
-92.48392883    52.96531732
-2.483984994    92.48392883
MAIN_ADDRESS
-1.207614869    52.98908196

Answer 1

NEW_OFFICE always is the first line, and always has two lines below it, the same goes for MAIN_ADDRESS it always has one line below it. NEW_OFFICE & MAIN_ADDRESS can't appear more than once.

根据您上面提到的评论，解决方案如下:

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.Arrays;

public class Main {
    public static void main(String[] args) throws IOException {
        String[][] office = new String[2][2];
        String[][] main = new String[1][2];
        try (BufferedReader in = new BufferedReader(new FileReader("myDelivery.txt"))) {
            String read;
            while ((read = in.readLine()) != null) {
                if (read.equalsIgnoreCase("NEW_OFFICE")) {
                    // Read next two lines
                    for (int i = 0; i < 2; i++) {
                        if ((read = in.readLine()) != null) {
                            office[i] = read.split("\\s+");
                        }
                    }
                } else if (read.equalsIgnoreCase("MAIN_ADDRESS")) {
                    // Read next line
                    if ((read = in.readLine()) != null) {
                        main[0] = read.split("\\s+");
                    }
                }
            }
        }
        // Display office[][]
        System.out.println("Displaying office:");
        for (String[] officeData : office) {
            System.out.println(Arrays.toString(officeData));
        }

        // Display main[][]
        System.out.println("Displaying main:");
        for (String[] mainData : main) {
            System.out.println(Arrays.toString(mainData));
        }
    }
}

输出:

Displaying office:
[-92.48392883, 52.96531732]
[-2.483984994, 92.48392883]
Displaying main:
[-1.207614869, 52.98908196]

注释:

1. \\s+ 用于在空格上分割行。
2. 使用try-with-resources语法来简化您的代码。