Class getAnnotation() method in Java with Examples Last Updated : 27 Dec, 2019 Comments Improve Suggest changes Like Article Like Report The getAnnotation() method of java.lang.Class class is used to get the annotation of the specified annotation type, if such an annotation is present in this class. The method returns that class in the form of an object. Syntax: public T getAnnotation(Class<T> annotationClass) Parameter: This method accepts a parameter annotationClass which is the type of the annotation to get. Return Value: This method returns the specified object of the annotation class. Exception: This method throws: NullPointerException: if the given annotation class is null. Below programs demonstrate the getAnnotation() method. Example 1: Java // Java program to demonstrate // getAnnotation() method import java.util.*; import java.lang.annotation.*; // create a custom Annotation @Retention(RetentionPolicy.RUNTIME) @interface Annotation { // This annotation has two attributes. public String key(); public String value(); } // call Annotation for method // and pass values for annotation @Annotation(key = "GFG", value = "GeeksForGeeks") public class Test { public static void main(String[] args) throws ClassNotFoundException { // returns the Class object for this class Class myClass = Test.class; System.out.println("Class represented by myClass: " + myClass.toString()); // Get the annotation // using getAnnotation() method System.out.println( "Annotation of myClass: " + myClass.getAnnotation( Annotation.class)); } } Output: Class represented by myClass: class Test Annotation of myClass: @Annotation(key=GFG, value=GeeksForGeeks) Example 2: Java // Java program to demonstrate // getAnnotation() method import java.util.*; import java.lang.annotation.*; // Class with no annotations // getAnnotation() will return null public class Test { public static void main(String[] args) throws ClassNotFoundException { // returns the Class object for this class Class myClass = Test.class; System.out.println("Class represented by myClass: " + myClass.toString()); // Get the annotation // using getAnnotation() method System.out.println( "Annotation of myClass: " + myClass.getAnnotation( Annotation.class)); } } Output: Class represented by myClass: class Test Annotation of myClass: null Reference: https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html#getAnnotation-java.lang.Class- Comment More infoAdvertise with us Next Article Class getAnnotation() method in Java with Examples S srinam Follow Improve Article Tags : Java Java-lang package Java-Functions Java.lang.Class Practice Tags : Java Similar Reads Class getAnnotations() method in Java with Examples The getAnnotations() method of java.lang.Class class is used to get the annotations present in this class. The method returns an array of annotations present. Syntax: public Annotation[] getAnnotations() Parameter: This method does not accepts any parameter. Return Value: This method returns an arra 2 min read Class getAnnotationsByType() method in Java with Examples The getAnnotationsByType() method of java.lang.Class class is used to get the annotations of the specified annotation type present in this class. The method returns an array of annotations for the specified annotation type. Syntax: public A[] getAnnotationsByType(Class<T> annotationClass) Para 2 min read Class getDeclaredAnnotation() method in Java with Examples The getDeclaredAnnotation() method of java.lang.Class class is used to get the declared annotation of the specified declared annotation type, if such an declared annotation is present in this class. The method returns that class in the form of an object. Syntax: public T getDeclaredAnnotation(Class 2 min read Class getDeclaredAnnotations() method in Java with Examples The getDeclaredAnnotations() method of java.lang.Class class is used to get the declared annotations present in this class. The method returns an array of declared annotations present. Syntax: public DeclaredAnnotation[] getDeclaredAnnotations() Parameter: This method does not accepts any parameter. 2 min read Class getAnnotatedInterfaces() method in Java with Examples The getAnnotatedInterfaces() method of java.lang.Class class is used to get the superinterface type annotations present in this class. The method returns an array of annotations present. Syntax: public Annotation[] getAnnotatedInterfaces() Parameter: This method does not accepts any parameter.Return 2 min read Like