Hi all,
I dont really understand annotations and I dont know what I am doing
wrong with this lab, the code is the following:
"RequestForEnhancement.java"
import java.lang.annotation.*;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface RequestForEnhancement {
int id();
String synopsis();
String engineer() default "[unassigned]";
String date() default "[unimplemented]";
}
*******************************************************************************************
"AnnotationImplementation.java"
import java.util.Date;
public class AnnotationImplementation {
int id;
String synopsis;
String engineer;
Date date;
@RequestForEnhancement(
id = 2868724,
synopsis = "Enable time-travel",
engineer = "Mr. Peabody",
date = "4/1/3007")
public int getId(){
return id;
}
public String getSynopsis(){
return synopsis;
}
public String getEngineer(){
return engineer;
}
public Date getDate(){
return date;
}
}
********************************************************************************
"MyOwnAnnotationExample.java"
import java.lang.annotation.*;
public class MyOwnAnnotationExample {
AnnotationImplementation ai;
public MyOwnAnnotationExample(){
ai=new AnnotationImplementation();
}
public void printAnnotations() {
Class c = ai.getClass();
Annotation[] annotations = c.getAnnotations();
int numberOfAnnotations = annotations.length;
System.out.println("Class " + c.getName() + " has " +
numberOfAnnotations + " annotations");
for (int i = 0 ; i < numberOfAnnotations; i++) {
System.out.println("Annotation " + i + ": " + annotations
[i] +
", type" + annotations[i].annotationType().getName
());
}
}
public static void main(String[] args) {
MyOwnAnnotationExample moae = new MyOwnAnnotationExample();
moae.printAnnotations();
}
}
***********************************************************
The resul when build and run is:
run:
Class AnnotationImplementation has 0 annotations
BUILD SUCCESSFUL (total time: 2 seconds)
Am I annotating a method, if so, why the result says 0 annotations,
what´s wrong
Thank you.
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