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

Wei Han Liu
Wei Han Liu
11,231 Points
Posted by Wei Han Liu
Wei Han Liu
11,231 Points

Adding elements to custom annotation in Java

I don't understand the question and the method to solve this. Can anybody help me?

Add two elements to the LiveTweet annotation:

  1. username, declared as a String. Set its default to an empty String.
  2. hashtags, declared as a String array. Set its default to an empty array.
LiveTweet.java 
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.annotation.ElementType;


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


}

2 Answers

Fahad Mutair
Fahad Mutair
10,359 Points
Fahad Mutair
Fahad Mutair
10,359 Points

change your element names to username and your array name to hashtags

Sagar Thakkar
Sagar Thakkar
8,814 Points
Sagar Thakkar
Sagar Thakkar
8,814 Points 
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.annotation.ElementType;


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


}