The getDeclaredAnnotations() method of java.lang.Package 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:
// Java program to demonstrate// getDeclaredAnnotations() method import java.util.*;import java.lang.annotation.*; @Deprecatedpublic class Test { public Object obj; public static void main(String[] args) throws ClassNotFoundException { try { // returns the Class object for this class Class myClass = Test.class; System.out.println( "Class represented by myClass: " + myClass.toString()); // Get the declared annotation // using getDeclaredAnnotations() method 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:
// Java program to demonstrate// getDeclaredAnnotations() method import java.util.*;import java.lang.annotation.*; // create a custom DeclaredAnnotation@Retention(RetentionPolicy.RUNTIME)@interface DeclaredAnnotation { // This declared annotation has two attributes. public String key(); public String value();} // call DeclaredAnnotation for method// and pass values for declared annotation@DeclaredAnnotation(key = "GFG", value = "GeeksForGeeks")public class Test { public Object obj; public static void main(String[] args) throws ClassNotFoundException { // returns the Class object for this class Class myClass = Test.class; System.out.println( "Class represented by myClass: " + myClass.toString()); // Get the declared annotation // using getDeclaredAnnotations() method 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/Package.html#getDeclaredAnnotations–
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