初始化Java中的通用变量? [英] Initializing Generic Variables in Java?

问题描述

我在使用泛型时遇到了麻烦.我有一种方法

I'm having trouble working with generics. I have a method as

    public void push (T element) 

现在，我很难理解的是如何创建一个通用变量，以便可以将其传递给该方法.我知道泛型永远是一个数字，但是我不知道该怎么做.一定是

Now what I'm having trouble understanding is how to create a generic variable so that I can pass it into that method. I know that the generic will always be a number, but I'm not getting how I should do that. Would it have to be something like

T number = 5

然后我可以将其传递给push方法吗?我很困惑大家好吗?

And then would I be able to pass that into the push method? I'm quite confused. Thoughts guys?

推荐答案

您说T是数字

public class NumberStack<T extends Number> {
   public void push(T element) {
     // now you can add Number specific functionality here
   }
}

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