Constructor getAnnotatedReceiverType() method in Java with Examples
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:
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 {} |
sun.reflect.annotation.AnnotatedTypeFactory$AnnotatedTypeBaseImpl@12a3a380 Type = Test
Program 2:
// Java program to demonstrate// Constructor.getAnnotatedReceiverType() method import java.lang.annotation.ElementType;import java.lang.annotation.Retention;import java.lang.annotation.RetentionPolicy;import java.lang.annotation.Target;import java.lang.reflect.AnnotatedType;import java.lang.reflect.Constructor; public class GFG { public static void main(String[] args) throws NoSuchMethodException { // create a constructor class Constructor<?> c = Demo.class.getConstructors()[0]; // apply getAnnotatedReceiverType() AnnotatedType atr = c.getAnnotatedReceiverType(); // print result System.out.println(atr); System.out.println("Type = " + atr.getType().getTypeName()); }}class Demo { public Demo(@PathVar String str) {}} @Target({ ElementType.TYPE_USE })@Retention(RetentionPolicy.RUNTIME)@interface PathVar {} |
sun.reflect.annotation.AnnotatedTypeFactory$AnnotatedTypeBaseImpl@12a3a380 Type = Demo
References: https://docs.oracle.com/javase/10/docs/api/java/lang/reflect/Constructor.html#getAnnotatedReceiverType()
