So, the Vector API exposes the fromMemorySegment() method, especially for populating a vector from a memory segment. The ByteOrder can be nativeOrder(), which means the platform’s native order of bytes, or BIG_ENDIAN (big-endian byte order), or LITTLE_ORDER (little-endian byte order).A more convenient approach for populating the memory segment relies on a suite of Arena.allocateArray() methods. These methods create and populate the memory segment in a single line of code as follows