若執行以下的 Java 程式碼，則螢幕上輸出的數字依序為何？ public class ArrayReference { public static void main(String[] arg){ int[] array1 = {1, 2, 3, 4}; int[] array2 = {5, 6, 7, 8}; int[] array3 = {9, 10, 11, 12}; array3 = array1; array2 = array3; for(int counter=0; counter<array1.length; counter++){ array1[counter]=array1[counter]+array2[counter]+array3[counter]; } for(int counter=0; counter<array2.length; counter++){ System.out.println(array2[counter]); } } }