Miscellany

public boolean deleteBox(Long id){            boolean result = false;            Boxes box = entityManager.find(Boxes.class, id);             if(box != null){                  try {                    entityManager.remove(box);                    result = true;                  }                  catch(IllegalArgumentException e) {                      System.out.println(e);                  }                  catch(TransactionRequiredException e) {                      System.out.println(e);                  }                              }           return result;                     }