public class X { private String nom; private String prenom; public X() { this.nom = null; this.preom = null; } public X(String s1, String s2) { this.nom = s1; this.prenom = s2; } public getNom() { return this.nom; } public getPrenom() { return this.prenom; } public setNom(String s) { this.nom = s; } public setPrenom(Sting s) { this.prenom = s; } @Override public String toString() { return "La personne s'appelle " + this.prenom + " " + this.nom; } //ajoute methode nulle }