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| 1. 12. 1. Obtaining Annotations at Run Time by Use of Reflection |
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import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.reflect.Method;
// A simple annotation type.
@Retention(RetentionPolicy.RUNTIME)
@interface MyAnnotation {
String stringValue();
int intValue();
}
public class MainClass {
// Annotate a method.
@MyAnnotation(stringValue = "Annotation Example", intValue = 100)
public static void myMethod() {
}
public static void main(String[] a) {
try {
MainClass ob = new MainClass();
Class c = ob.getClass();
Method m = c.getMethod("myMethod");
MyAnnotation anno = m.getAnnotation(MyAnnotation.class);
System.out.println(anno.stringValue() + " " + anno.intValue());
} catch (NoSuchMethodException exc) {
System.out.println("Method Not Found.");
}
}
}
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Annotation Example 100 |
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