Java Reflection - Field.getAnnotation() Examples

Class:

java.lang.reflect.Field

Method:

public <T extends Annotation> T getAnnotation(Class<T> annotationClass)

Returns this field's annotation for the specified type if such an annotation is present, else null.

Note that this method is defined in AnnotatedElement interface.

Examples

package com.logicbig.example.field;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.reflect.Field;

public class GetAnnotationExample {
    @PrimeNumber
    private int anInt;

    public static void main(String... args) throws NoSuchFieldException {
        Field field = GetAnnotationExample.class.getDeclaredField("anInt");
        PrimeNumber annotation = field.getAnnotation(PrimeNumber.class);
        System.out.println(annotation);
    }

    @Target({ElementType.FIELD})
    @Retention(RetentionPolicy.RUNTIME)
    private @interface PrimeNumber {}
}

Output

@com.logicbig.example.field.GetAnnotationExample$PrimeNumber()

Java Reflection - Field.getAnnotation() Examples

Class:

Method:

Examples

Output

See Also