Prev Next

Java / Annotations

Explain repeating annotation in Java8.

Prior to Java 8, attaching more than one annotation of the same type to the same part of the code (for example, a class or a method) was not allowed. Therefore, the developers had to group them together into single container annotation as a workaround:

@Authors({
    @Author(name = "John"),
    @Author(name = "George")
})
public class Book { ... }

Java 8 introduces repeating annotations which allows to rewrite the same annotation without explicitly using the container annotation:

@Author(name = "John")
@Author(name = "George")
public class Book { ... }

The container annotation is still used but this time the Java compiler is responsible for wrapping the repeating annotations into a container annotation.

User-defined annotations are not repeatable by default and have to be annotated with @Repeatable annotation.

It's right time to invest in Cryptocurrencies! Earn free bitcoins up to $250 now by signing up.

Earn bitcoins upto $250 (free), invest in other Cryptocurrencies when you signup with blockfi. Use the referral link: https://blockfi.com/?ref=f2ab78ba

Using BlockFi, don't just buy crypto - start earning on it. Open an interest account with up to 8.6% APY, trade currencies, or borrow money without selling your assets.

Invest now!!! Get Free equity stock (US,UK only)!

Use Robinhood app to invest in stocks. It is safe and secure. Use the Referral link to claim your free stock when you sign up!.

The Robinhood app makes it easy to trade stocks, crypto and more.

More Related questions...

Show more question and Answers...

XML

Comments & Discussions