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