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Asked: 2026-05-11T18:17:12+00:00

I haven’t touched Java since using JBuilder in the late 90’s while at University,

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I haven’t touched Java since using JBuilder in the late 90’s while at University, so I’m a little out of touch – at any rate I’ve been working on a small Java project this week, and using Intellij IDEA as my IDE, for a change of pace from my regular .Net development.

I notice it has support for adding interfaces and @interfaces, what is an @interface, and how does it differ from a normal interface?

public interface Test {
}

vs.

public @interface Test {
}

I’ve done a bit of searching, but couldn’t find a great deal of useful info referring to @interface.

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1 Answer

  1. Editorial Team

    The @ symbol denotes an annotation type definition.

    That means it is not really an interface, but rather a new annotation type — to be used as a function modifier, such as @override.

    See this javadocs entry on the subject.

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