private void jBtnSubmitActionPerformed( java.awt.event.ActionEvent evt) { // GEN-FIRST:event_jBtnSubmitActionPerformed Enrollment enrollment = new Enrollment(); enrollment.readEnrollmentBySubscriptionIdAndUserId(this.subscription.getId(), this.userId); if (enrollment.isEnrolled() == false) { enrollment.subscribe(this.subscription.getId(), this.userId); User user = new User(); user.readUser(this.userId); this.model.insertRow(0, new Object[] {user.getId(), user.getFullName()}); Application.getInstance() .showPopup(new SuccessPopup("Deelnemer " + user.getFullName() + " is ingeschreven.")); } else { Application.getInstance().showPopup(new ErrorPopup("De deelnemer is al ingeschreven.")); } } // GEN-LAST:event_jBtnSubmitActionPerformed