OOP1, k2, z1, DomZdravlja

import java.io.BufferedReader;
import java.io.FileReader;

public class DomZdravlja {

  public static final String FILE_IN = "lekari.txt";

  public static void main(String[] args){

    Lekar[] domZdravlja = ucitajLekare();
    stampajLekare(domZdravlja);

    //String imeLekara = "Pera";
    //stampajKolegeIzSmene(imeLekara);
    //stampajNajtrazenijegLekara();
  }

  //ToDo: izSmene, najtrazenijeg

  //private static void stampajKolegeIzSmene(String ime){}

  //private static void stampajNajtrazenijegLekara(){}

  private static Lekar[] ucitajLekare(){
    Lekar[] res = null;
    try{
    BufferedReader reader = new BufferedReader(new FileReader(FILE_IN));

    int num = Integer.parseInt(reader.readLine());
    res = new Lekar[num];

    for(int i = 0; i < num; i++){

      String line = reader.readLine();

      String[] lines = line.split(",");

      String ime = lines[0].trim();
      int brojRecepata = Integer.parseInt(lines[1].trim());
      int smena = Integer.parseInt(lines[2].trim());

      if(lines.length <= 3){
        res[i] = new Lekar(ime, brojRecepata, smena); //kreiranje lekara
      } else {
        //prebroj
        int preostalih = lines.length - 3;
        Lekar[] uputi = new Lekar[preostalih];
        for(int p = 0; p < preostalih; p++){ //p = 3; p < lines.length

          for(int z = 0; z < i; z++){
            if(res[z].getIme().equals(lines[p+3].toString().trim())){
              uputi[p] = res[z];
            }
          }
        }
        res[i] = new Specijalista(ime, brojRecepata, smena, uputi);
      }
    }

    reader.close();

    }catch(Exception e){
      e.printStackTrace();
    }
    return res;
  }


  private static void stampajLekare(Lekar[] domZdravlja){
    for(Lekar l: domZdravlja){
      System.out.println(l.toString());
    }
  }

}

class Lekar {

  private String ime;
  private int brojRecepata;
  private int smena; //1, 2, 3

  public Lekar(String ime, int brojRecepata, int smena){

    this.ime = ime;
    this.brojRecepata = brojRecepata;
    this.smena = smena;
  }

  public String getIme(){
    return ime;
  }

  public int getBrojRecepata(){
    return brojRecepata;
  }

  public int getSmena(){
    return smena;
  }

  @Override
  public String toString(){
    return "ime: " + ime + " ,broj recepata: " + brojRecepata + " ,smena: " + smena;
  }

}

final class Specijalista extends Lekar {

  private Lekar[] uputi;

  public Specijalista(String ime, int brojRecepata, int smena, Lekar[] uputi){
    super(ime, brojRecepata, smena);
    this.uputi = uputi;
  }

  @Override
  public String toString(){
    StringBuilder sb = new StringBuilder(super.toString() + " uputi: ");
    for(Lekar l: uputi){
      sb.append(l.getIme() + ", ");
    }
    return sb.toString();
  }
}