使用 IntelliJ IDEA 在 Java 中引用具有相对路径的文本文件

Question

I have a program that reads numbers from a .txt file. My problem is where to place this file, or how to reference it with a relative path to make this file accessible without using the absolute path.

Answer 1

When you try to open a file, it takes your current working path. For example this working tree:

Project
|->src
|   |-->MyClass.java
|   |-->MyFile1.txt
|->res
   |->files
     |-->MyFile2.txt

You can use

new File("MyFile1.txt");

for MyFile1, or

new File("./res/files/MyFile2.txt");

for MyFile2.

Answer 2

You need to start your path from src. "src/your/path/file.txt". See my answer here

Answer 3

If you have a multi-project setup, it may not be obvious what the "root" directory is for a relative path. In that case, open the Terminal tab in your IntelliJ and see what directory it lands in. That is the "root" directory. Your relative path should start there.