Soru1.java 文件源码

private void btn_kontrolActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btn_kontrolActionPerformed
    // TODO add your handling code here:
     EntityManagerFactory emf = Persistence.createEntityManagerFactory("BP2_LAB2PU");
        EntityManager em = emf.createEntityManager();
        Query q = em.createQuery("SELECT m FROM Musteri m");
        List<Musteri> musteriler = q.getResultList();

    for (Musteri musteri : musteriler) {
         Path p= Paths.get("musteriler\\"+musteri.getId()+".txt");
         try {
             p.toRealPath();
         } catch (IOException ex) {
             System.out.println(musteri.getId()+" numaralı müsteri dosyası bulunamadı");
         }
    }

}