Annotation Viewer : Annotation « Language Basics « Java

Annotation Viewer


import com.sun.javadoc.*;
import java.lang.annotation.*;

public class AnnotationViewer {
    public static boolean start(RootDoc root)
        ClassDoc[] classes = root.classes();

        for (ClassDoc cls : classes) {


    static void showAnnotations(ClassDoc cls)
        System.out.println("Annotations for class [" + cls + "]");

        for(MethodDoc m : cls.methods()) {
            System.out.println("Annotations for method [" + m + "]");

    static void process(AnnotationDesc[] anns)
        for (AnnotationDesc ad : anns) {
            AnnotationDesc.ElementValuePair evp[] = ad.elementValues();

            for(AnnotationDesc.ElementValuePair e : evp) {
                System.out.println("  NAME: " + e.element() + ", VALUE=" + e.value());



Related examples in the same category

1.Simple annotation
2.Annotation Demo
3.An annotation type declaration. An annotation type declaration.
4.An annotation type declaration 2.An annotation type declaration 2.
5.Show all annotations for a class and a method.Show all annotations for a class and a method.
6.An annotation type declaration and include defaults. An annotation type declaration and include defaults.
7.A marker annotation. A marker annotation.
8.A single member annotation. A single member annotation.
9.Java Annotation: Deprecated and hierarchy
10.Java Annotation: Annotation and ReflectionJava Annotation: Annotation and Reflection
11.Java annotation: Super Sub TesterJava annotation: Super Sub Tester
12.Java Annotation Tester
13.Override Annotation Tester
14.Insert an annotation to suppress warning
15.Suppress warning in ANT script
16.How do I mark method as deprecated?
17.What is SuppressWarnings annotation?
18.Use Override annotation
19.SuppressWarnings Annotation Tester