java for语句的一个用法

上代码：

package com.wjy;

public class Test {
 public static void main(String[] args) {
  int[] attay = new int[5];
    for (int i : attay) {
   System.out.println("it is " + i);
  }

 }
}

运行结果：

it is 0
it is 0
it is 0
it is 0
it is 0