在Java中实现抽象方法时，是否应该添加@Override批注? [英] Should I add an @Override annotation when implementing abstract methods in Java?

问题描述

在Java中重写非虚拟方法时，建议使用@Override批注，但是如果我实现抽象方法怎么办?我也应该使用@Override吗?

When overriding a non-virtual method in Java, use of the @Override annotation is recommended, but what if I implement an abstract method? Should I use @Override then as well?

推荐答案

在这种情况下，我倾向于使用@Override，这样，如果超类发生更改，则该方法将在子类中进行标记(或者完全删除该方法) ，或更改其签名等).

I tend to prefer the use of @Override in this case, so that the method gets flagged in the subclasses if the superclass changes (either removing the method altogether, or changing its signature, etc.).

唯一真正的区别是，如果没有注释，则如果更改或删除了超类/接口中的方法，则所讨论的实现将简单地成为该类的常规"方法.因此，如果您只是为了履行合同而实施方法，则应添加注释；否则，您应该添加注释.如果该方法在您的类中有意义，则无论您是否实现了任何接口或继承的抽象方法，您都可能不应该添加它.

The only real difference is that without the annotation, if the method in the superclass/interface is changed or removed, the implementation in question simply becomes a "normal" method of that class. Thus you should add the annotation if you're implementing the method solely to fulfil the contract; and you probably shouldn't add it if the method makes sense in your class regardless of any implemented interfaces or inherited abstract methods.

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