"Be sure that you account for the entire id, not just part of it."

I tried this code with an without displaying the id in the output, but the validation fails at point 3 with the recommendation "Be sure that you account for the entire id, not just part of it.". The output seems to be right ... Any hints? Thanks in advance!

public class Solution {
    public static void main(String[] args) throws IOException {
        String id = args[0];
        BufferedReader consoleReader = new BufferedReader(new InputStreamReader(System.in));
        String fileName = consoleReader.readLine();
        consoleReader.close();

        BufferedReader fileReader = new BufferedReader(new InputStreamReader (new FileInputStream(fileName)));

        while(fileReader.ready()){
            String temp = fileReader.readLine();
            if(temp.startsWith( id )){
                String result = temp.replaceAll(id + " ", "");
                System.out.println(result);
                break;
            }
        }
        fileReader.close();
    }
}