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Java Java Annotations Writing Your Own Annotation Adding Annotation Targets and Elements

Abdullah Mohamed
Abdullah Mohamed
17,323 Points
Posted by Abdullah Mohamed
Abdullah Mohamed
17,323 Points

How to return empty string array in the default value in java annotation ?

It returns an error every time I run this code that the hashtags element should return an empty string array and I don't know what I did wrong. Thanks in advance. . .

import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy;

import java.lang.annotation.Target; import java.lang.annotation.ElementType;

@Retention(RetentionPolicy.RUNTIME) @Target({ElementType.TYPE, ElementType.METHOD}) public @interface LiveTweet { String username() default ""; String[] hashtags() default ""; }

1 Answer

Jeremy Faith
PLUS
Jeremy Faith
Courses Plus Student 56,696 Points
Jeremy Faith
Jeremy Faith
Courses Plus Student 56,696 Points

You only need to change one thing. Your default value for String[] hashtags() should be {} not "". The double quotes are for an empty string while the curly braces are for an empty array.

Hope this helps.