Question

import java.io.File;
import java.io.InputStreamReader;
import java.io.BufferedReader;

public class Rec{
  public void txtMod(){
    File fileName = new File ("C:\\work\\imput.txt");
    BufferedReader in = new BufferedReader (new InputStreamReader(fileName));
    ...
  }
}

new InputStreamReader(fileName) gets underlined with the following error: ‘The constructor InputStreamReader(File) is undefined‘. How do I define it? Doesn’t new define it?

Answer 1

That isn’t a valid argument for constructing an InputStreamReader. You need to create the InputStream and pass that to the InputStreamReader.

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

However, the best way to do this is to use a FileReader.

Reader in = new FileReader(fileName)