Java-从文本文件创建字符串数组 [英] Java - Create String Array from text file

问题描述

我有一个像这样的文本文件:

I have a text file like this :

abc def jhi
klm nop qrs
tuv wxy zzz

我想要一个像这样的字符串数组:

I want to have a string array like :

String[] arr = {"abc def jhi","klm nop qrs","tuv wxy zzz"}

我已经尝试过:

try
    {
        FileInputStream fstream_school = new FileInputStream("text1.txt");
        DataInputStream data_input = new DataInputStream(fstream_school);
        BufferedReader buffer = new BufferedReader(new InputStreamReader(data_input));
        String str_line;
        while ((str_line = buffer.readLine()) != null)
        {
            str_line = str_line.trim();
            if ((str_line.length()!=0)) 
            {
                String[] itemsSchool = str_line.split("\t");
            }
        }
    }
catch (Exception e)  
    {
     // Catch exception if any
        System.err.println("Error: " + e.getMessage());
    }

任何人都可以帮助我.所有的答案将不胜感激...

Anyone help me please.... All answer would be appreciated...

推荐答案

根据您的输入，您就快到了.您错过了循环中从文件中读取每一行的要点.由于您不事先知道文件中的总行数，因此请使用一个集合(动态分配的大小)来获取所有内容，然后将其转换为 String 的数组(这是您所需要的)输出).

Based on your input you are almost there. You missed the point in your loop where to keep each line read from the file. As you don't a priori know the total lines in the file, use a collection (dynamically allocated size) to get all the contents and then convert it to an array of String (as this is your desired output).

类似这样的东西:

    String[] arr= null;
    List<String> itemsSchool = new ArrayList<String>();

    try 
    { 
        FileInputStream fstream_school = new FileInputStream("text1.txt"); 
        DataInputStream data_input = new DataInputStream(fstream_school); 
        BufferedReader buffer = new BufferedReader(new InputStreamReader(data_input)); 
        String str_line; 

        while ((str_line = buffer.readLine()) != null) 
        { 
            str_line = str_line.trim(); 
            if ((str_line.length()!=0))  
            { 
                itemsSchool.add(str_line);
            } 
        }

        arr = (String[])itemsSchool.toArray(new String[itemsSchool.size()]);
    }

然后输出( arr )将是:

{"abc def jhi","klm nop qrs","tuv wxy zzz"} 

这不是最佳解决方案.其他聪明答案已经给出.这仅是您当前方法的解决方案.

This is not the optimal solution. Other more clever answers have already be given. This is only a solution for your current approach.

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