Class getDeclaredAnnotations() method in Java with Examples
Last Updated :
27 Dec, 2019
The getDeclaredAnnotations() method of java.lang.Class class is used to get the declared annotations present in this class. The method returns an array of declared annotations present.
Syntax:
public DeclaredAnnotation[] getDeclaredAnnotations()
Parameter: This method does not accepts any parameter.
Return Value: This method returns an array of declared annotations present.
Below programs demonstrate the getDeclaredAnnotations() method.
Example 1:
import java.util.*;
import java.lang.annotation.*;
@Deprecated
public class Test {
public Object obj;
public static void main(String[] args)
throws ClassNotFoundException
{
try {
Class myClass = Test. class ;
System.out.println(
"Class represented by myClass: "
+ myClass.toString());
System.out.println(
"DeclaredAnnotation of myClass: "
+ Arrays.toString(
myClass.getDeclaredAnnotations()));
}
catch (Exception e) {
System.out.println(e);
}
}
}
|
Output:
Class represented by myClass: class Test
DeclaredAnnotation of myClass: [@java.lang.Deprecated()]
Example 2:
import java.util.*;
import java.lang.annotation.*;
@Retention (RetentionPolicy.RUNTIME)
@interface DeclaredAnnotation {
public String key();
public String value();
}
@DeclaredAnnotation (key = "GFG" , value = "GeeksForGeeks" )
public class Test {
public Object obj;
public static void main(String[] args)
throws ClassNotFoundException
{
Class myClass = Test. class ;
System.out.println(
"Class represented by myClass: "
+ myClass.toString());
System.out.println(
"DeclaredAnnotation of myClass: "
+ Arrays.toString(
myClass.getDeclaredAnnotations()));
}
}
|
Output:
Class represented by myClass: class Test
DeclaredAnnotation of myClass: [@DeclaredAnnotation(key=GFG, value=GeeksForGeeks)]
Reference: https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html#getDeclaredAnnotations–
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