Nedumerire java

[sergiu4995]

Am 3 clase,dar problema e ca nu afiseaza nimic.. si nu gasesc cauza.
1
class Produse {
public static void main(String[] args){

}
public float pret;
public String producator;

public Produse(float pret, String producator){
this.pret=pret;
this.producator=producator;
}
public float getPret(){
return pret;
}
public void setPret(float pret){
this.pret=pret;
}

public String getProducator() {
return producator;
}
public void setProducator(String producator) {
this.producator=producator;
}
public void Discount(float procent) {
pret=pret*(1-procent);
System.out.println("Nou pret e:"+pret);
}
}

2
public class ProduseAlimentare extends Produse{

public int exp;

public ProduseAlimentare(float pret, String producator, int exp){
super(pret,producator);
this.exp=exp;
}
public void afisare(){
System.out.println("Acest produs este facut de"+getProducator()+ "si expira in" +exp+ "ore");

}
}

3
public class ProduseNealimentare extends Produse{
public String[] vanzare;

public ProduseNealimentare(float pret, String producator, String[] vanzare) {
super(pret, producator);
this.vanzare=vanzare;
}

public void afisare(){
System.out.println("sss" +vanzare);
}
}