我们应该@Override 接口的方法实现吗? [英] Should we @Override an interface's method implementation?

问题描述

实现接口方法的方法是否应该用@Override注解?

Should a method that implements an interface method be annotated with @Override?

Override注释说:

表示方法声明旨在覆盖超类中的方法声明.如果某个方法使用此注解类型进行注解但未覆盖超类方法，则编译器需要生成错误消息.

Indicates that a method declaration is intended to override a method declaration in a superclass. If a method is annotated with this annotation type but does not override a superclass method, compilers are required to generate an error message.

我不认为接口在技术上是超类.或者是吗?

I don't think that an interface is technically a superclass. Or is it?

问题阐述

推荐答案

你应该尽可能使用@Override.它可以防止出现简单的错误.示例:

You should use @Override whenever possible. It prevents simple mistakes from being made. Example:

class C {
    @Override
    public boolean equals(SomeClass obj){
        // code ...
    }
}

这不会编译，因为它没有正确覆盖 public boolean equals(Object obj).

This doesn't compile because it doesn't properly override public boolean equals(Object obj).

同样适用于实现接口(仅限 1.6 及更高版本)或覆盖超类方法的方法.

The same will go for methods that implement an interface (1.6 and above only) or override a Super class's method.

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