final static void checkArraySize(int arraylength, int offset, int length)
static final void checkArraySize(int arraylength, int offset, int length)
  final static void checkArraySize(int arraylength, int offset, int length)  {    if ((offset < 0) ||        (length < 0) ||        (arraylength < length + offset))      throw new IndexOutOfBoundsException ();  }