annotations

问题 This question already has answers here : Why annotation on generic type argument is not visible for nested type? (2 answers) Closed 2 years ago . It appears that TYPE_USE annotations cannot be accessed through reflection when the annotated type is a nested, generic interface. Please observe the following example: import java.lang.annotation.ElementType; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import java.lang.annotation.Target; import java.lang

问题 I think title describes the problem. Here's some code: import static org.junit.Assert.assertEquals; import java.lang.annotation.*; public class Main { public static void main(String[] args) throws Exception { assertEquals("foo", Main.class.getDeclaredMethod("myMethod").getAnnotation(Anno.class).param()); // the magic here -> set to bar assertEquals("bar", Main.class.getDeclaredMethod("myMethod").getAnnotation(Anno.class).param()); } @Anno(param = "foo") public void myMethod() {} @Retention

问题 I think title describes the problem. Here's some code: import static org.junit.Assert.assertEquals; import java.lang.annotation.*; public class Main { public static void main(String[] args) throws Exception { assertEquals("foo", Main.class.getDeclaredMethod("myMethod").getAnnotation(Anno.class).param()); // the magic here -> set to bar assertEquals("bar", Main.class.getDeclaredMethod("myMethod").getAnnotation(Anno.class).param()); } @Anno(param = "foo") public void myMethod() {} @Retention

问题 A co-worker on IntelliJ IDEA (working on another project) showed me the amazing @NotNull annotation. I've read messages here on SO about how starting to add @NotNull everywhere saved lots of time and headaches (and IntelliJ 10 can even add automatically @NotNull to old code when it detects that null would wreak havoc). Since I read my first "Probable @NotNull violation" message (in real-time, in the IDE, even on a partial .java file that doesn't compile yet) my jaw dropped and I got hooked.

问题 I have three arrays of annotations in my app, foodannotations, gasannotations, and shoppingannotations. I want each array of annotations to show a different colored pin. I am currently using - (MKAnnotationView *)mapView:(MKMapView *)sheratonmap viewForAnnotation:(id<MKAnnotation>)annotation { NSLog(@"Welcome to the Map View Annotation"); if([annotation isKindOfClass:[MKUserLocation class]]) return nil; static NSString* AnnotationIdentifier = @"Annotation Identifier"; MKPinAnnotationView*

问题 Getting the Class Not Found Exception for DispatcherServlet while rendering index.jsp which is in WEB-CONTENT/WEB-INF/jsp/index.jsp Following are how the project is structured. web.xml is under WEB-CONTENT. abc is the name of my Dispatcher servlet. So config file will be abc-servlet.xml which will contain the bean tag with all the namespace and schemas defined. Where should i place the abc-servlet.xml file? Should it be in the classes folder or where the web.xml is? Is the exception arising

问题 Spring 3 reference teaches us: When you place it on a method parameter, @ModelAttribute maps a model attribute to the specific, annotated method parameter I don't understand this magic spell, because i sure that model object's alias (key value if using ModelMap as return type) passed to the View after executing of the request handler method. Therefore when request handler method executes the model object's name can't be mapped to the method parameter. To solve this contradiction i went to

问题 Let's say I have a situation like this: public String method(String s) { return stringForThisVisibility(s, EnumVisibility.PUBLIC); } and I want to replace it with an annotation like this: @VisibilityLevel(value = EnumVisibility.PUBLIC) public String method(String s) { return stringForThisVisibility(s); } This seems to be a better and more clear solution, but i need for stringForThisVisibility method to know value of @VisibilityLevel with some kind of reflection. Is that possible? Can I see

问题 I testing my DAO, but it didn't work. The following error occurs: Tests in error: testAccountOperations(com.tsekhan.rssreader.dao.HibernateControllerTest): Error creating bean with name 'com.tsekhan.rssreader.dao.HibernateControllerTest': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.tsekhan.rssreader.dao.HibernateController com.tsekhan.rssreader.dao.HibernateControllerTest

问题 I testing my DAO, but it didn't work. The following error occurs: Tests in error: testAccountOperations(com.tsekhan.rssreader.dao.HibernateControllerTest): Error creating bean with name 'com.tsekhan.rssreader.dao.HibernateControllerTest': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.tsekhan.rssreader.dao.HibernateController com.tsekhan.rssreader.dao.HibernateControllerTest