初始化一个简单数组的这2个方面的区别 [英] difference between these 2 ways of initializing an simple array

问题描述

在Java中，我可以初始化predefined内容或者通过数组：

In java, I can initialize an array with predefined content either by :

int[] myArr = new int[]{1,2,3};

或

int[] myArr = {1,2,3};

从本质上讲，是有这两种方式有什么区别？他们是在Java中完全一致的？哪种方式更好，为什么？

Essentially, is there any difference between these two ways ? Are they completely identical in Java ? Which way is better and why?

推荐答案

在你的情况没有什么区别。

In your case there is no difference.

将有一个区别当你不分配你的阵列变量和做在线创作。

There will be a difference when you are not assigning your array to variable and doing inline creation.

例如，求索有方法，它接受一个数组作为参数。<​​/ P>

for example, conside there is method, which takes an array as argument.

  private  void someX(int[] param){
              // do something
          }

您情况：

  someX(myArr);     // using some declared array .I.e your case

现在看到了差距，而在其他情况下调用它。

Now see the difference while calling it in other cases.

      someX(new int[] {1,2,3}); //  yes, compiler satisfied.
      someX({1,2,3});     //Error. Sorry boss, I don't know the type of array

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