将表达式重构为函数会对性能产生影响吗？(Does Refactoring of expressions into a function have a performance impact?)

 给出以下简单的示例代码 
 
rawData.matches(".*[a-zA-Z\\-].*")
 
 我有两种重构的可能性： 
 
 1）重构为变量 
 
 2）重构成一个函数 
 
 对（2）有任何性能影响吗？ 
 
 AFAIK JVM内联所有函数调用，它应该没有任何影响。 

given following simple example code
 
rawData.matches(".*[a-zA-Z\\-].*")
 
I have two possibilities of refactoring: 
 
1) refactoring into a variable
 
2) refactoring into a function
 
Is there any performance impact on (2)?
 
AFAIK the JVM inlines all function calls and it should have no impact.

原文：