Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package onlineBoutique.service; import java.util.Random; import onlineBoutique.entity.CodePromo; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; /** * * @author admin */ @Service public class GenerationCodePromoService { @Autowired private CodePromoService codePromoService; public void generationDunCodePromo(CodePromo codePromo) { Random rand = new Random(); Integer max = 9999; Integer min = 1000; Integer numAleatoire = rand.nextInt(max - min + 1) + min; codePromo.setCodePromo(numAleatoire.toString()); codePromoService.save(codePromo); } }