package file_io;

import java.io.*;

public class TestFileIO {
  
  /** Creates and starts a new TestFileIO application. */
  public TestFileIO () {
    try {
      PrintWriter writer = new PrintWriter ("J:/Documents/ics/111/test.txt");
      writer.println ("Hi from HI");
      writer.println ("Hi from ics 111");
      writer.close ();
    } catch (FileNotFoundException e) {
      e.printStackTrace();
    }
  }

  public static String readFileByLine () {
    try {
      File file = new File ("J:/Documents/ics/111/test.txt");
      InputStream input = new FileInputStream(file);
      try {
        LineNumberReader reader = new LineNumberReader (new InputStreamReader(input));
        String text = "";
        String line = reader.readLine();
        for (; line != null; line = reader.readLine()) {
          text += line + "\n";
        }
        // now text contains the contents of the file
        return text;
      } catch (IOException error) {
        //handle reading error
      } finally {
        try {input.close ();
        } catch (IOException error) {}
        //handle closing error
      }
    } catch (FileNotFoundException error) {
      //handle non-existing file error
    }
    return null;
  }

  public static void main (String [] arguments) {
    new TestFileIO ();
    String text = readFileByLine ();
    System.out.println (text);
  }
}