static S javaxDefaultVMArgs() {
  File fileNew, fileOld;
  S text = loadTextFile(fileNew = javaxDataDir("default-vm-args"));
  if (text == null) {
    text = loadTextFile(fileOld = programFile(#1005850, "default-vm-args"));
    if (text != null)
      moveFile(fileOld, fileNew);
  }
  return trim(unnull(text));
}