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Java Java Annotations Writing Your Own Annotation Putting It All Together

Shaun Wetzel
Shaun Wetzel
9,085 Points

Struggling with Putting it all together challenge task 4 of 4 in java Annotation course

First 3 tasks i completed, and i attempted the 4th task but am a little lost on what to do.

My attempt is what i saw during the course videos and what i had on the course workspaces.

Task goal In the TestAnalyzer class, implement (complete) the getNumAnnotatedMethods method. The details of how it should function are given in the comment above the method.

output.html error messages

./TestAnalyzer.java:8: error: cannot find symbol
    int annotatedMethodCount = clazz.methods().length;
  symbol:   method methods()
  location: variable clazz of type Class
./TestAnalyzer.java:9: error: cannot find symbol
    int actualMethodCount = clazz.getMethodCount();
  symbol:   method getMethodCount()
  location: variable clazz of type Class
2 errors
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.annotation.ElementType;

public @interface Test {
  String eleOne() default "";
  String[] eleTwo() default {};

public class SocialNetworkTest {

  @Test(eleOne = "Test tweet", eleTwo = {"display the test tweets"})
  public void testTweet() {


  @Test(eleOne = "test insta", eleTwo = {"display insta tests"})
  public void testInsta() { 


  @Test(eleOne = "testing facebook", eleTwo = {"display the facebook tests"})
  public void testFacebook() { 


  public void testPinterest() { 


  public void testSnapchat() { 

import java.lang.reflect.Method;
import java.lang.reflect.Modifier;

public class TestAnalyzer {
   *  Counts the number of methods in the class given by `clazz` that have been annotated
   *  with the @Test annotation.
  public static int getNumAnnotatedMethods(Class<?> clazz) {
    int numAnnotated = 0;
    int annotatedMethodCount = clazz.methods().length;
    int actualMethodCount = clazz.getMethodCount();
    if (annotatedMethodCount < actualMethodCount) {
      numAnnotated = actualMethodCount - annotatedMethodCount;
    return numAnnotated;  

I think that you are making things a little complex.

The way that I solved the problem was to initialize an integer with a value of 0. Then I looped through the declared methods using clazz.getDeclaredMethods. Then I checked to see if the method was annotated using method.isAnnotationPresent(Test.class). If this was true, I just incremented the count and returned that at the end.

Hopefully, that helps anybody going forward.

3 Answers

Shaun Wetzel
Shaun Wetzel
9,085 Points

Still haven't found an answer.

facing same problem