Is Java's System.arraycopy() efficient for small arrays?

Question

Is Java\'s System.arraycopy() efficient for small arrays, or does the fact that it\'s a native method make it likely to be substantially less efficient than a s

Answer 1

System.arraycopy use a memmove operation for moving words and assembly for moving other primitive types in C behind the scene. So it makes its best effort to move as much as efficient it can reach.