java Java接口？

Java Interfaces?

提问by Devoted

I really need help with interfaces in general...

我真的需要一般的界面方面的帮助......

Any resources that you guys would recommend me?

大家有什么资源推荐给我吗？

Related:

有关的：

• How are Java interfaces actually used?
• Java interface and inheritance
• Java Interface Usage Guidelines — Are getters and setters in an interface bad?
• Why can't I define a static method in a Java interface?

• Java 接口实际上是如何使用的？
• Java接口和继承
• Java 接口使用指南 — 接口中的 getter 和 setter 是否不好？
• 为什么我不能在 Java 接口中定义静态方法？

回答by Click Upvote

What is an Interface?from Java's official tutorial

什么是接口？来自Java的官方教程

Edit: A second resource from the same tutorial, is the Interfaces and Inheritencesection.

编辑：来自同一教程的第二个资源是接口和继承部分。

回答by Toon Krijthe

In general:

一般来说：

You can see an interface as a contract or an agreement between two parties. So they can develop independently as long as the interface does not change.

您可以将接口视为两方之间的合同或协议。所以只要接口不变，他们就可以独立开发。

The calling party, knows which behaviour is available and the implementing party knows what to implement.

调用方知道哪些行为可用，执行方知道要实现什么。

There are a lot of advantages by using interfaces. One of them is that it is easy to switch between implementations. The other one is that classes can have different (inter)faces without using multiple inheritance.

使用接口有很多好处。其中之一是很容易在实现之间切换。另一个是类可以在不使用多重继承的情况下具有不同的（接口）接口。

回答by WiseTechi

You might want to have a look at this excellent book by Bruce Eckel (free available in electronic format) : Thinking in Java

你可能想看看 Bruce Eckel 的这本优秀的书（电子版免费提供）： Thinking in Java

回答by Yasir Shabbir Choudhary

Interface is just like Java class but it contain only abstract method and final attribute.Basically interface are used to achieve "Polymorphic" behavior.

接口就像Java类，但它只包含抽象方法和最终属性。接口基本上是用来实现“多态”行为的。

Here is the detail coding example

这是详细的编码示例