在Java数组初始化 [英] Array initialisation in java

问题描述

我注意到，你可以写多个code这样的，这是完全正常的，顺便说一句：

I noticed one could write code like this, which is perfectly normal, by the way:

int arrays[] = {1, 2, 3};
for (int n : arrays)
   System.out.println(n);

但我看不到下面怎么是非法的：

But I don't see how the following is illegal:

for (int n : {1, 2, 3})
   System.out.println(n);

从一个编译器作者的角度来看，这不会引入任何含糊之处，不是吗？类型的阵列可以预期是相同类型的元素声明previously。换句话说， N 声明为 INT ，以使阵列的必须的是 INT []

From a compiler writer's point of view, this does not introduce any ambiguity, does it? The type of the array can be expected to be the same type as the element declared previously. In other words, n is declared as int, so the array must be int[]

推荐答案

您需要语法如下：

for(int n : new int[]{1, 2, 3})
   System.out.println(n);

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