x型的表达式被装入X？ [英] The expression of type x is boxed into X?

问题描述

我有点困惑，我的Eclipse IDE正在每个表达式旁边写着类型为autoboxed或autounboxed的警告：

 类型x的表达式被包装到X 
 
类型X的表达式被取消装箱到x 
  

这是我应该做出的一个警告吗？我认为自动装箱是一种Java语言功能 - 但是现在我每次使用此功能时都会收到警告。

解决方案

不要认为Eclipse默认情况下这样做（我的不），但是您可以使用首选项> Java>编译器>错误/警告>潜在的编程问题>打包和解箱转换来打开或关闭。

除非你真的想知道这一点，否则应该是忽略。

I'm a little confused by a warning that my Eclipse IDE is currently writing next to every expression where types are autoboxed or autounboxed:

The expression of type x is boxed into X

The expression of type X is unboxed into x

Is this a warning I should react on? I thought autoboxing was a Java language feature - but now I seem to get warnings everytime this feature is used.

解决方案

I don't think Eclipse does this by default (mine does not), but you can turn it on or off using Preferences > Java > Compiler > Errors/Warnings > Potential programming problems > Boxing and Unboxing Conversions.

It should be "Ignore" unless you really want to know about this.

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