Java tutorial
import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import java.lang.reflect.Method; @Retention(RetentionPolicy.RUNTIME) @interface MySingle { int value(); // this variable name must be value } class Single { @MySingle(100) public static void myMeth() { Single ob = new Single(); try { Method m = ob.getClass().getMethod("myMeth"); MySingle anno = m.getAnnotation(MySingle.class); System.out.println(anno.value()); // displays 100 } catch (NoSuchMethodException exc) { System.out.println("Method Not Found."); } } public static void main(String args[]) { myMeth(); } }