public boolean save(Object o) {
   return tableDB.save(o);
 }
 public ArrayList getAll() {
   return tableDB.getAll();
 }
 public boolean remove(int id) {
   return tableDB.remove(id);
 }
 public Object get(int id) {
   return tableDB.get(id);
 }
 public boolean saveAll(ArrayList a) {
   return tableDB.saveAll(a);
 }