G5

//toString()-methode

public class Kontogetter {
    private int kontoId = 19283;

    public int getKontoId(){
        return kontoId;
    }
    @Override
    public String toString(){
        StringBuilder sb = new StringBuilder();
        String result = sb.append("Hallo,")
                .append("hier ist Mia")
                .toString();
        String str = result + "Konto-Id: " + getKontoId();
        return str;
    }
}

//Implementierung im main()
public static void main(String args[]){
  Kontogetter gt = new Kontogetter();
  System.out.println(gt.toString());
}