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custom annotation java

Innocent Iguana answered on May 25, 2022 Popularity 10/10 Helpfulness 2/10

answer custom annotation java

related Java Custom Annotations

custom annotation java

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// Annotation class
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;

@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE,ElementType.FIELD})
public @interface MyCustomAnnotation {
    String name();
    int age();
}

// Annotated class
@MyCustomAnnotation(name = "ABC", age = 10)
public class AnnotatedClass {
    // Class implementation
}

// Driver Class/ Main class
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;

public class MainApp {
    public static void main(String[] args) {
        // Get the class
        Class<AnnotatedClass> annotatedClass = AnnotatedClass.class;

        // Get all annotations on the class
        Annotation[] annotations = annotatedClass.getAnnotations();

        // Iterate over the annotations
        for (Annotation annotation : annotations) {
            if (annotation instanceof MyCustomAnnotation) {
                // Access annotation elements
                MyCustomAnnotation customAnnotation = (MyCustomAnnotation) annotation;
                String name = customAnnotation.name();
                int age = customAnnotation.age();

                // Display annotation values
                System.out.println("Name: " + name);
                System.out.println("Age: " + age);
            }
        }
    }
}

Popularity 10/10 Helpfulness 2/10 Language java

Source: Grepper

Tags: java

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Contributed on Jan 09 2024

Innocent Iguana

0 Answers Avg Quality 2/10

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Java Custom Annotations

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[Access Specifier] @interface<AnnotationName> {         
  DataType <Method Name>() [default value];
}

Popularity 10/10 Helpfulness 2/10 Language java

Source: Grepper

Tags: annotations anno

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Contributed on May 25 2022

SAMER SAEID

0 Answers Avg Quality 2/10

custom annotation java

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