从文件中读取文本并将每行中的每个单词存储到单独的变量中 [英] reading text from file and store each word from every line into separate variables

问题描述

1 1111 47

2 2222 92

3 3333 81

我想逐行阅读并将每个单词存储到不同的变量中。
例如：当我读第一行1 1111 47时，我想将第一个单词1存储到var_1中，将1111存入var_2，将47存入var_3。然后，当它到达下一行时，值应分别存储在相同的var_1，var_2和var_3变量中。

我的初始方法如下：

$ $ p $ import java.io 。*;
class ReadFromFile
{
public static void main（String [] args）throws IOException
{
int i;
FileInputStream fin;
尝试
{
fin = new FileInputStream（args [0]）;

catch（FileNotFoundException fex）
{
System.out.println（File not found）;
return;
}
do
{
i = fin.read（）;
if（i！= -1）
System.out.print（（char）i）;
} while（i！= -1）;

fin.close（）;




$ b

请给我你的建议。谢谢


解决方案

  public static void main（String [] args）throws IOException { b $ b File file = new File（/ path / to / InputFile）; 
 BufferedReader br = new BufferedReader（new InputStreamReader（new FileInputStream（file）））; 
 String line = null; 
 while（（line = br.readLine（））！= null）{
 // \\s +表示记号之间任意数量的空格
 String [] tokens = line.split （ \\s +）; 
 String var_1 = tokens [0]; 
 String var_2 = tokens [1]; 
 String var_3 = tokens [2]; 
} 
} 
  




I have a .txt file with the following content.

1 1111 47

2 2222 92

3 3333 81

I would like to read line-by-line and store each word into different variables. For example : When I read first line "1 1111 47" I would like store the first word "1" into var_1, "1111" into var_2, and "47" into var_3. Then, when it goes to next line, the values should be stored into same var_1, var_2 and var_3 variables respectively.

My initial approach is as follows :

import java.io.*;
class ReadFromFile
{
    public static void main(String[] args) throws IOException
    {
        int i;
        FileInputStream fin;
        try
        {
            fin = new FileInputStream(args[0]);
        }
        catch(FileNotFoundException fex)
        {
            System.out.println("File not found");
            return;
        }
        do 
        {
            i = fin.read();
            if(i != -1) 
                System.out.print((char) i);
        } while(i != -1);

        fin.close();
    }
}

Kindly give me your suggestions. Thank You

解决方案

public static void main(String[] args) throws IOException {
    File file = new File("/path/to/InputFile");
    BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
    String line = null;
    while( (line = br.readLine())!= null ){
        // \\s+ means any number of whitespaces between tokens
        String [] tokens = line.split("\\s+");
        String var_1 = tokens[0];
        String var_2 = tokens[1];
        String var_3 = tokens[2];
    }
}

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