Show all annotations for a class and a method.
import java.lang.annotation.*;
import java.lang.reflect.*;
@Retention(RetentionPolicy.RUNTIME)
@interface MyAnno {
String str();
int val();
}
@Retention(RetentionPolicy.RUNTIME)
@interface What {
String description();
}
@What(description = "An annotation test class")
@MyAnno(str = "Meta2", val = 99)
public class Meta2 {
@What(description = "An annotation test method")
@MyAnno(str = "Testing", val = 100)
public static void myMeth() {
Meta2 ob = new Meta2();
try {
Annotation annos[] = ob.getClass().getAnnotations();
// Display all annotations for Meta2.
System.out.println("All annotations for Meta2:");
for(Annotation a : annos)
System.out.println(a);
System.out.println();
// Display all annotations for myMeth.
Method m = ob.getClass( ).getMethod("myMeth");
annos = m.getAnnotations();
System.out.println("All annotations for myMeth:");
for(Annotation a : annos)
System.out.println(a);
} catch (NoSuchMethodException exc) {
System.out.println("Method Not Found.");
}
}
public static void main(String args[]) {
myMeth();
}
}
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