int[] arr1 = new int[3];

int[] arr2 = new int[4];

arr1=arr2;

int[] arr3 = new int[2];

arr1=arr3;

์ด๋Ÿฐ์‹์œผ๋กœ ๊ณ„์† size ๋‹ค๋ฅธ array๋กœ ๋ฐ”๊ฟ”์ฃผ๊ณ ์‹ถ์€๋ฐ ์–ด์ผ€ํ•ด์•ผํ•จ?