我可以在公共方法中声明私有变量吗? [英] Can I Declare private variables inside a public method?

问题描述

这个问题是我在一次采访中问的.

我们可以在公共方法中声明私有变量吗?
如果可以，我们可以通过public方法访问变量吗?

This question was asked from me in an interview.

Can we declare private variables inside a public method?
If can, can we access variables through the public method?

我尝试使用Java，但是不允许在方法内部定义私有变量，这是为什么?

I tried with java but it does not allow to define private variable inside a method why is that?

public class GetUser {

public String getUserName(){

    private String user="David"; 

return user;

}}

推荐答案

不，您不能. 方法内部的变量被认为是局部的，不能有修饰符. 您可以在一个类中有专用字段，但这是不同的:

No, you can not. Variables inside method are considered local and can't have modifiers. You can have private fields in a class, but this is different:

public class Test {
    public String getUserName(){

        user="David"; 
        return user;

    }
    private String user;
}

此外，命名类GetUser有点尴尬. 更好的类名称为User. getUser更适合方法名称.

Besides, naming a class GetUser is kind of awkward. A better class name would be User. getUser is more appropriate for a method name.

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