javahashmap的get()函数-theget()functionforjavahashmaps

I've declared the following hashmap:

我已经声明了以下hashmap:

HashMap hives

Where Hive is an object.

蜂巢是一个物体。

If I call "hives.get(2)" will it return a copy of the object Hive at that location or a reference to it?

如果我调用“hives.get(2)”，它会返回在那个位置的对象Hive的副本还是对它的引用?

My goal is to modify the Hive object at that location. If it returns the reference, I can just modify the returned hive and be done. However, if a copy gets returned then I'll have to put that copy back into the hashmap.

我的目标是在那个位置修改Hive对象。如果它返回引用，我就可以修改返回的hive并完成。但是，如果返回一个副本，那么我必须将该副本放回hashmap中。

Sorry for the simple question. I tried looking around for a solution, but everywhere I looked it simply said the value would be returned, it didn't say if it would be a copy of the value or a reference to it.

不好意思，这个问题很简单。我试图寻找一个解决方案，但无论我到哪里，它都只是说会返回值，而没有说它是该值的副本还是引用。

Thanks, Zain

谢谢,Zain

3 个解决方案