编写一个java程序，创建数组arr1和arr2，将数组arr1中索引位置是0～3中的元素复制到数

int[] arr1={1,3,4,5,6}; int[] arr2; arr2=Arrays.copyOf(arr1, 4); for (int i = 0; i < arr1.length; i++) { System.out.print(arr1[i]); } System.out.println(); for (int i = 0; i < arr2.length; i++) { System.out.print(arr2[i]); }