How do I add a resources folder to my Java project in Eclipse

When at the “Add resource folder”,
Build Path -> Configure Build Path -> Source (Tab) -> Add Folder -> Create new Folder

add “my-resource.txt” file inside the new folder.
Then in your code:

    InputStream res =
    Main.class.getResourceAsStream("/my-resource.txt");

    BufferedReader reader =
        new BufferedReader(new InputStreamReader(res));
    String line = null;
    while ((line = reader.readLine()) != null) {
        System.out.println(line);
    }
    reader.close();