问题描述
在文档中我读到:
A variables name can be any legal identifier — an **unlimited-length** sequence of Unicode letters and digits
所以,我创建了这个类:
so, i created this class:
class Test{
public static void main(String args[])
{
int i=10;
}}
其中i - 不是i, c $ c> 3 000 000 chars
。
大小.java文件〜3M。
where i - its not i, its variable with name length - 3
000000 chars
.the size .java file ~3M.
我尝试编译此文件:
javac Test.java
在结果中我有 Test.class
with size Test.class 4
bayts。
In result i have Test.class
with size Test.class 4
bayts.
:
- 真的尝试,名字
unlimited-length
?? - 编译器如何翻译我的变量名长度为3000000字符,结果我有这么小的
.class
文件?
- Its really try, that name
unlimited-length
?? - How compiler translate my variable name with length 3000000 chars, that in result i have so small
.class
file?
推荐答案
iiiiiii ..
是一个局部变量,从其他类访问。因此,其名称无关紧要;编译器不需要存储它。另外,编译器可能会查看你的代码,并确定 {int i = 10;}
实际上并不执行任何操作,可以替换为 {}
,因为这两个版本产生相同的程序输出(无)。
iiiiiii..
is a local variable, i.e. it cannot be accessed from other classes. Therefore, its name does not matter; the compiler does not need to store it. Additionally, the compiler may look at your code and determine that {int i = 10;}
is not actually doing anything and can be replaced by {}
since both versions produce the same program output (none).
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