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