static L _registerWeakMap_preList = synchroList();

static <A> A _registerWeakMap(A map) {
  if (javax() == null) { _registerWeakMap_preList.add(map); ret map; }
  try {
    call(javax(), '_registerWeakMap, map);
  } catch e {
    printException(e);
    print("Upgrade JavaX!!");
  }
  ret map;
}

static void _onLoad_registerWeakMap() {
  assertNotNull(javax());
  for (O o : _registerWeakMap_preList)
    _registerWeakMap(o);
  _registerWeakMap_preList = null;
}