Vezba 3 samostalni

Program
-------------
package glavni;

import niti.Prudzbina;
import sun.java2d.loops.GraphicsPrimitive;

import java.util.Scanner;

public class Program {
    public static void main(String[] args) {
        System.out.println("Aplikacija pokrenuta...");
        Scanner sc=new Scanner(System.in);
        String narucilac;
        String jelo;
        int kolicina;
        double cena;
        while (true){
            System.out.print("Narucilac:");
            narucilac=sc.nextLine();
            if (narucilac.toUpperCase().equals("KRAJ"))
                break;
            System.out.print("Jelo:");
            jelo=sc.nextLine();
            System.out.print("Kolicina:");
            kolicina=sc.nextInt();
            System.out.print("Cena:");
            cena=sc.nextDouble();
            Thread t=new Thread(new Prudzbina(narucilac,jelo,kolicina,cena));
            t.start();
            sc.nextLine();    //ciscenje bafera
        }
        System.out.println("Radno vreme zavrseno, ne primaju se vise porudzbine!!!");
    }


}
------------------------
Porudzbina
--------------------------
package niti;

public class Prudzbina implements Runnable{
    private String narucilac;
    private String jelo;
    private int kolicina;
    private double cena;
    private int vreme;
    private static int brojac=0;

    public Prudzbina(String narucilac, String jelo, int kolicina, double cena) {
        this.narucilac = narucilac;
        this.jelo = jelo;
        this.kolicina = kolicina;
        this.cena = cena;
        this.vreme=(int)(Math.random()*5+5);
        brojac++;
    }

    @Override
    public void run() {
        for (int i=vreme;i>0;i--) {
            System.out.println("Porudzbina "+brojac+". na ime " + this.narucilac + " ( " + this.jelo + ", kolicina:" + this.kolicina + ", cena:" + this.cena + " RSD) stize za "+i+" sekundi");
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("Porudzbina na ime " + this.narucilac + " ( " + this.jelo + ", kolicina:" + this.kolicina + ", cena:" + this.cena + " RSD) gotova!!!");
    }
}