Java泛型:特殊用法< T扩展了对象&界面> [英] Java Generics: Special usage <T extends Object & Interface>

问题描述

我经常发现这样的代码在Java中使用泛型:

I often find code which uses generics in Java like this:

public static <T extends Object & Interface> foo(T object) {
    ...
}

因为在Java中，每个类都从对象类继承，所以我不确定extends Object是否具有特殊含义或是否用于特殊目的.有人可以告诉我使用此背景是否有其他背景，或者当您使用<T extends Interface>时这是隐式给出的吗?

Since in Java every class inherites from object class I'm not sure if extends Object gives a special meaning or is used for special purposes. Can anyone tell me if there is a different background using this or this is implicit given when you take <T extends Interface>?

推荐答案

<T extends Object & Interface>

Object显然是多余的，通常等于

That Object is clearly redundant and typically equals to

<T extends Interface>

请注意，强烈建议不要使用Interface作为类名.

Note that using Interface as a class name is highly discouraged.

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