分析以下程序是否能够正常执行,如果能,请写出运行结果,如果不能,请说明原因。 public class test2 { public static void main(String[] args) { int[] arr = new int[4]{1,2,3,4}; System.out.println("arr[0] = " + arr[0]); System.out.println("arr[1] = " + arr[1]); System.out.println("arr[2] = " + arr[2]); System.out.println("arr[3] = " + arr[3]); } }