pesel_termin1_2020

public class pesel {
    static int max = 0;
    static String maxx;
    static int doemerytury;
    static int dataa;
    static int wiek;
    static String data;
    static String fix(String filename) throws FileNotFoundException {

    try{
    RandomAccessFile raf = new RandomAccessFile(filename, "rw");

    String line;

    while( (line=raf.readLine())!=null ){
    String imie = line;
    String nazwisko = raf.readLine();
    char plec = raf.readLine().charAt(0);
    long pesel = Long.parseLong(raf.readLine());

    long pos1 = raf.getFilePointer();
    raf.writeBytes("   ");

    String pestring = Long.toString(pesel);

    String l1 = Character.toString(pestring.charAt(0));
    String l2 = Character.toString(pestring.charAt(1));

    if(pestring.length()==11){
    data = "19"+l1+l2;}
    else { data = "20"+l1+l2;}

    dataa = Integer.parseInt(data);
    wiek = 2020-dataa;

    if(plec=='K'){ doemerytury = 60-wiek; }
    if(plec=='M'){ doemerytury = 65-wiek; }
    raf.seek(pos1);
    raf.writeBytes(Integer.toString(doemerytury));

    if(doemerytury>max){maxx=imie+" "+nazwisko;}

    raf.readLine();
    }

    raf.close();
    }
    catch (Exception e){System.out.println(e);}

    return maxx;}