java只是花括号 [英] java just curly braces

问题描述

我正在读一本书，有一些例子只有大括号的程序

I was reading a book and there were a few example with programs that has just curly braces

例如

 public static void main(String args[]){
     //what is the uses of curly braces here.
     {
          //some code
     }
 }

推荐答案

这是一个代码块。在那里声明的变量在上面的块中是不可见的（这些curlies之外的方法体），即它们的范围更有限。

It's a code block. The variables declared in there are not visible in the upper block (method body outside of these curlies), i.e. they have a more limited scope.

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