package algorytmy;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

/**
 *
 * @author Długi
 */
public class Algorytmy {

    void czytaj(){

        FileReader fr = null;
        String line = "";

        try{
            fr = new FileReader("123.txt");
        }catch (FileNotFoundException e){
            System.out.println("Error, could not open a file");
            System.exit(1);
        }

        BufferedReader bfr = new BufferedReader(fr);
   // reading lines from file
   try {
     while((line = bfr.readLine()) != null){
        System.out.println(line);
     }
    } catch (IOException e) {
        System.out.println("Error, could not open a file");
        System.exit(2);
   }

   // closing a file
   try {
     fr.close();
    } catch (IOException e) {
         System.out.println("Error, could not close a file");
         System.exit(3);
        }
    }


    public static void main(String[] args) {



    }

}