The getAnnotatedReceiverType() method of a Constructor class is used to return an AnnotatedType object that represents the AnnotatedType to specify the receiver type of this constructor. If the constructor has a receiver parameter then The receiver type of a constructor is available. If this constructor either has no receiver parameter or has a receiver parameter with no annotations on its type, then the return value is an AnnotatedType object representing an element with no annotations. If this constructor is a top-level static member then the return value is null.
Syntax:
Java
Java
public AnnotatedType getAnnotatedReceiverType()Parameters: This method accepts nothing. Return value: This method returns an object of AnnotatedType representing the receiver type of the method or constructor represented by this Executable or null if this Executable can not have a receiver parameter. Below programs illustrate the getAnnotatedReceiverType() method: Program 1:
// Java program to demonstrate
// Constructor.getAnnotatedReceiverType() method
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.reflect.AnnotatedType;
import java.lang.reflect.Constructor;
public class GFG {
public static void main(String[] args)
throws NoSuchMethodException
{
// create a constructor class
Constructor<?> c = Test.class.getConstructors()[0];
// apply getAnnotatedReceiverType()
AnnotatedType atr
= c.getAnnotatedReceiverType();
// print result
System.out.println(atr);
System.out.println("Type = "
+ atr.getType().getTypeName());
}
}
class Test {
public Test(@Annotation Test test) {}
}
@Target({ ElementType.TYPE_USE })
@Retention(RetentionPolicy.RUNTIME)
@interface Annotation {
}
Output:
Program 2:
sun.reflect.annotation.AnnotatedTypeFactory$AnnotatedTypeBaseImpl@12a3a380 Type = Test
// Java program to demonstrate
// Constructor.getAnnotatedReceiverType() method
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.reflect.AnnotatedType;
import java.lang.reflect.Constructor;
public class GFG {
public static void main(String[] args)
throws NoSuchMethodException
{
// create a constructor class
Constructor<?> c
= Demo.class.getConstructors()[0];
// apply getAnnotatedReceiverType()
AnnotatedType atr
= c.getAnnotatedReceiverType();
// print result
System.out.println(atr);
System.out.println("Type = "
+ atr.getType().getTypeName());
}
}
class Demo {
public Demo(@PathVar String str) {}
}
@Target({ ElementType.TYPE_USE })
@Retention(RetentionPolicy.RUNTIME)
@interface PathVar {
}
Output:
References: https://docs.oracle.com/javase/10/docs/api/java/lang/reflect/Constructor.html#getAnnotatedReceiverType()sun.reflect.annotation.AnnotatedTypeFactory$AnnotatedTypeBaseImpl@12a3a380 Type = Demo