在另一个目录中为一个bufferedReader选择一个文件 [英] Selecting a file in another directory for a bufferedReader

问题描述

我有一个初始化文件（initialize.java），它使用fileInputStream从fileInput.txt中提取数据，但它们都在不同的目录中。

  Project / library / initialize.java 
项目/资源/文本/ fileInput.txt 
  

我在initialize.java中的代码是：

  FileInputStream fstream = new FileInputStream（/ resources / text / fileInput.txt）; 
  

但是无法读取该文件。我也试过

  FileInputStream fstream = new FileInputStream（./ resources / text / fileInput.txt）; 
  

但是没有这样做。

如何访问txt文件，使用./resources和/ resources有什么区别？

感谢您阅读本文。

解决方案

差异很大。在 linux / unix / macos 以/从根目录开始的路径。以./开头的路径，或从当前应用程序目录开始。调用

System.out.println（new File（。）。getAbsolutePath（））你是吗？

I have an initialization file (initialize.java) that pulls in data from fileInput.txt using a fileInputStream, but both of them are in different directories.

Project/library/initialize.java
Project/resources/text/fileInput.txt

my code in initialize.java is:

FileInputStream fstream = new FileInputStream("/resources/text/fileInput.txt");

But the file cannot be read. I've also tried

FileInputStream fstream = new FileInputStream("./resources/text/fileInput.txt");

But that didn't work too.

How can I access the txt file and what's the difference between using "./resources" and "/resources"?

Thanks for reading this.

解决方案

The difference is huge. On linux/unix/macos the path starting with / starts from root directory. The path starting with ./ or without starting from current application directory. Call

System.out.println(new File("."). getAbsolutePath()) to check where you are?

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