File f = new File(nomJar);
u = f.toURI().toURL();
URLClassLoader loader = new URLClassLoader(new URL[]{u});
                        JarFile jar = new JarFile(f.getAbsolutePath());

                        Class jeu = Class.forName(nomClasse, true, loader);

                        status.setText("Classe " + jeu.getName() + " chargée");

                        Constructor constructors[] = jeu.getDeclaredConstructors();
                        Constructor constructor = null;
                        for(int i=0;i<constructors.length;i++){
                            if(constructors[i].getParameterTypes().length == 0){
                                constructor = constructors[i];
                            }
                        }
                        if(constructor == null)
                            status.setText("Impossible de trouver un constructeur valide");

                        Method getNom = jeu.getDeclaredMethod("getNom",null);
                        final Object instanceJeu = constructor.newInstance();