有没有任何区别＆QUOT;对象[]×＆QUOT;和＆QUOT;对象x [] QUOT ;? [英] Is there any difference between "Object[] x" and "Object x[]"?

问题描述

我正在更新Java中的遗留code的基础，我发现这样一行：

 对象ARG [] = {新的整数（20），新的整数（22）};
 

这行逮住我的注意，因为我习惯了这种code的：

 对象[] = ARG {新的整数（20），新的整数（22）};
 

数组的内容在这里并不重要。我很好奇括号中的变量名与旁边的类名括号旁边。我在Eclipse中尝试（使用Java 5）和两条线是有效的编译器。

有这些声明有何区别？

解决方案

两者都是法律和双方的工作。但建议数组的名字前面放置[]。

的Javadoc ：

  

您也可以放置在方括号中的数组名称后面：

 浮动anArrayOfFloats []; //这种形式是不鼓励
 

  

然而，习惯不鼓励这种形式;括号标识阵列类型和应与类型名称出现。

I was updating a legacy code base in Java and I found a line like this:

Object arg[] = { new Integer(20), new Integer(22) };

That line catched my attention because I am used to this kind of code:

Object[] arg = { new Integer(20), new Integer(22) };

The content of the array isn't important here. I'm curious about the brackets next to the variable name versus the brackets next to the class name. I tried in Eclipse (with Java 5) and both lines are valid for the compiler.

Is there any difference between those declarations?

解决方案

Both are legal and both work. But placing [] before the array's name is recommended.

From Javadocs:

You can also place the square brackets after the array's name:

float anArrayOfFloats[]; // this form is discouraged

However, convention discourages this form; the brackets identify the array type and should appear with the type designation.

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