如何在java中获得类注解？(How to get class annotation in java?)

 我已经创建了我自己的注释类型，如下所示： 
 
public @interface NewAnnotationType {}
 
 并附加到一个类： 
 
@NewAnnotationType
public class NewClass {
    public void DoSomething() {}
}
 
 我试图通过像这样的反射来获得类注解： 
 
Class newClass = NewClass.class;

for (Annotation annotation : newClass.getDeclaredAnnotations()) {
    System.out.println(annotation.toString());
}
 
 但它不打印任何东西。 我究竟做错了什么？ 

I have created my own annotation type like this:
 
public @interface NewAnnotationType {}
 
and attached it to a class:
 
@NewAnnotationType
public class NewClass {
    public void DoSomething() {}
}
 
and I tried to get the class annotation via reflection like this :
 
Class newClass = NewClass.class;

for (Annotation annotation : newClass.getDeclaredAnnotations()) {
    System.out.println(annotation.toString());
}
 
but it's not printing anything. What am I doing wrong?

原文：https://stackoverflow.com/questions/17908771