Sorting even numbers from a file

Three times is the charm right?... I did not use InteliJ or anything like that, just out of thin air you can verify the task. Amazing advice.

whew! had to look up a lot of stuff and learned a lot. Found that you can solve by either using a Scanner or not. Using a Scanner is nice, b/c it can work with bytes & has the nextInt() method. Not using a Scanner, all you have to do is convert String to int and evaluate that value to remainder equals zero int value = Integer.parseInt(reader.readLine()); Hope that helps without giving an answer. Happy coding! :)

Don't be lazy guys, I was trying to insert part of the path to target file in Solution class (e.g C:\codegym\(...)\task1326\ + read.readLine();) and even if program worked correctly, the validator wouldnt pass it. I was struggling for hours thinking what was wrong with this, as validator showed piont 3 not fulfilled as well ("The program should display data on screen."). Once I removed that first part of the path, it passed. I realised that user should be able to send any path, not only the one in the folder where Solution class is located.

Interesting, when I used Scanner to read the file, (after getting the filename, and creating a FileInputStream with the filename passed as an argument) even though the code was doing exactly the same thing as when I used BufferedReader in the end, it didn't validate because of too many lines. I used Scanner because the logic was simple: while Scanner hasNext, add nextInt to a list etc. which you can't do with BufferedReader.

I have tested it myself and it works, but the tests claim that it doesn't print anything. even though it does do it in ascending order

Does anyone know what the issue with my

even.add(Integer.parseInt(n));

might be?

Lost bunch of time before my first try to verify task on fixing bug. But to the surprise verifier doesn't even check this scenario. The problem was that last line of file didn't read. My algorithm was next: 1. Read file by bytes; 2. Save byte to the buffer if it doesn't equal 10 (ASCII's end of line) ; 3. If byte equals 10 then convert buffer to the string (and then to the int) 4. Add converted buffer to the arraylist. 5. erase buffer So as you can see, if there is no empty line in the end then last number doesn't add to the arraylist either. How can i check end of file, if i am using InputStream.read()? P.S. Should i create this question in the help section even i already completed the task?