有没有办法在方法中访问调用类的变量？ [英] Is there a way to access the variables of the calling class in a method?

问题描述

目前，我有一个正在调用其他类的静态方法的类。但是我想做的是让静态方法更改调用类的变量，这可能吗？

At present I have a class that is calling the static method of a different class. What I am trying to do however is have the static method change a variable of the calling class, is that possible?

示例代码：

public class exClass {
    private int aVariable;

    public exClass() {
        othClass.aMethod();
    }
}

public class othClass {

    static void aMethod() {
        // stuff happens, preferably stuff that
        // allows me to change exClass.aVariable
    }
}​

所以我想知道的是，是否有一种方法可以访问调用othClass的exClass实例的aVariable。显然，除了使用return语句。

So what I would like to know is, if there is a way to access aVariable of the instance of exClass that is calling othClass. Other than using a return statement, obviously.

推荐答案

您可以将 this 作为参数传递给第二个函数。

You can pass this as a parameter to the second function.

public class exClass {
   public int aVariable;

   public exClass()
   {
      othClass.aMethod(this);
   }
}

public class othClass{

   static void aMethod(exClass x)
   {
      x.aVariable = 0; //or call a setter if you want to keep the member private
   }
}

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