是否应该使用或不使用公共访问修饰符来声明 Java 接口中的方法? [英] Should methods in a Java interface be declared with or without a public access modifier?

问题描述

Java 接口中的方法是否应该使用public 访问修饰符来声明?

Should methods in a Java interface be declared with or without the public access modifier?

当然，从技术上讲，这无关紧要.实现interface 的类方法总是public.但什么是更好的约定?

Technically it doesn't matter, of course. A class method that implements an interface is always public. But what is a better convention?

Java 本身在这方面并不一致.参见例如Collection vs. Comparable，或Future vs. ScriptEngine.

Java itself is not consistent in this. See for instance Collection vs. Comparable, or Future vs. ScriptEngine.

推荐答案

JLS 清楚地说明了这一点:

The JLS makes this clear:

允许但不鼓励为接口中声明的方法冗余指定 public 和/或 abstract 修饰符.

It is permitted, but discouraged as a matter of style, to redundantly specify the public and/or abstract modifier for a method declared in an interface.

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