为什么getAnnotation不接受Class <？扩展注释>

Question

为什么跟随行会在Java中产生编译错误？或者我可以如何编写正确的泛型语法？

Class<? extends Annotation> annotation = annotations[i]; 
Class<? extends Annotation> anno = javaClass.getAnnotation(annotation); 

该方法的签名是：

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

在Eclipse编译错误：

incompatible types 
    Class<? extends Annotation> anno = javaClass.getAnnotation(annotation); 
                  ^
required: Class<? extends Annotation> 
found: CAP#1 
where CAP#1 is a fresh type-variable: 
    CAP#1 extends Annotation from capture of ? extends Annotation 

Answer 1

getAnnotation返回注解它：

Type mismatch: cannot convert from capture#5-of ? extends Annotation to Class<? extends Annotation> 

从javac的编译错误自我 - 不是注释的类。我怀疑你可以使用：

Class<? extends Annotation> annotationClass = annotations[i]; 
Annotation annotation = javaClass.getAnnotation(annotationClass);