Question

我正在尝试从txt文件中读取信息。文本文件采用以下格式：

1 I like programming. 2 "but I am new at it"  3 -so I need to go 
4 on web sites, 5 to get 6 help. 
7 I appreciate any help you could give me. 8 Thanks.

我想按如下方式显示它，同时在每个数字之前添加＆＃34; Chap＆＃34;，用于章节。

Chap 1 I like programming. 
Chap 2 "but I am new at it" 
Chap 3 -so I need to go 
Chap 4 on web sites,
Chap 5 to get 
Chap 6 help. 
Chap 7 I appreciate any help you could give me.
Chap 8 Thanks.

这是我到目前为止所做的：

public class ReadAFile {

public static void main(String[] args) throws IOException {

    // Get bible book names, chapters and verses
    File fileIn = new File("t.txt");
    Scanner inputFile = new Scanner(fileIn);                

    while(inputFile.hasNext())
    {
        // Read all lines from the file.
        String line = inputFile.nextLine();
        System.out.println(line);
        String[] tokens = line.split(" ");      
        for(int i = 0; i < tokens.length; i++)
        {
            if(tokens[i].matches("^-?\\d+$")) // I'mm using this to try to find the numbers in the txt file
            {
                for(int p = 0; p < tokens.length; p++)
                {
                    System.out.println(tokens[p]);                      
                }       
            }
        }                           
    }           
    inputFile.close();
}   
}

输出不是我想要的，我无法弄清楚原因。我要么在自己的行上得到每个单词，要么在同一个句子的多行中得到。

Answer 1

您是否尝试将for循环中的println切换为print，然后在打印章节标题时插入新行？

以下是您自己的代码的一部分，已修改。

if(tokens[i].matches("^-?\\d+$")) // I'mm using this to try to find the numbers in the txt file
{
    for(int p = 0; p < tokens.length; p++)
    {
        System.out.print(tokens[p]+ " "); //print                    
    }       
    System.out.println()//Empty line
}

Answer 2

数字是否总是从1开始连续？如果是这样，为什么不将它用于您的优势，只需将Scanner的分隔符更改为数字并将其替换为计数器？像这样：

public static void main(String[] args) throws IOException {

    // Get bible book names, chapters and verses
    File fileIn = new File("t.txt");
    Scanner inputFile = new Scanner(fileIn);
    inputFile.useDelimiter("\\s*-?\\d+\\s*");

    for (int num = 1; inputFile.hasNext(); num++)
    {
        System.out.println("Chap " + num + " " + inputFile.next());
    }

    inputFile.close();
}

输出：

Chap 1 I like programming.
Chap 2 "but I am new at it"
Chap 3 -so I need to go
Chap 4 on web sites,
Chap 5 to get
Chap 6 help.
Chap 7 I appreciate any help you could give me.
Chap 8 Thanks.

如果没有，请告诉我，我会处理一些事情来解析并保留它：）

在txt文件中查找整数

2 个答案: