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I found Java 8 has a different from Java 7 on Method.getAnnotation(Class<T> annotationClass),for example code:

public class Java8Test extends A<String> {
    public static void main(String[] args) {
        Class<Java8Test> b = Java8Test.class;
        Method[] methods = b.getDeclaredMethods();
        for (Method method : methods) {
            Annotation annotation = method.getAnnotation(Resource.class);
            if (annotation != null) {
                System.out.println(method);
            }
        }
    }

    @Resource
    public void print(String s) {
        System.out.println(s);
    }
}
class A<T extends Object> {
    void print(T t) {
    }
}

Run with Java 8 print:

public void com.test.java8.Java8Test.print(java.lang.Object)
public void com.test.java8.Java8Test.print(java.lang.String)

Run with Java 6 or Java 7 print :

public void com.test.java8.Java8Test.print(java.lang.String)

How I got the real method .

Magina
  • 47
  • 2

0 Answers0