Spring @Qualifier Annotation

So for avoid this type problem we can use the one more annotation @Qualifier along with the @Autowired annotation remove the confusion by specifying which exact bean will be wired. 
 Below is an example to show the use of @Qualifier annotation.

Circle.java

package com.dineshonjava.sdnext.autowiredannotation.tutorial;

import org.springframework.beans.factory.annotation.Autowired;

public class Circle
{ 
 private Point center;
 //using autowired annotation with setter method
//using qualifier annotation for exact bean will be wired
 @Autowired
 @Qualifier("circleBean")
 public void setCenter(Point center) 
 {
    this.center = center;
 }

 public void draw() 
 {
System.out.println("Circle is drawn of center ("+center.getX()+", "+center.getY()+")");
 }
}

Point.java

package com.dineshonjava.sdnext.autowiredannotation.tutorial;

public class Point
{
 private int x;
 private int y;
 /**
  * @return the x
  */
 public int getX() {
  return x;
 }
 /**
  * @param x the x to set
  */
 public void setX(int x) {
  this.x = x;
 }
 /**
  * @return the y
  */
 public int getY() {
    return y;
 }
 /**
  * @param y the y to set
  */
 public void setY(int y) {
           this.y = y;
 }
}

DrawingApp.java

package com.dineshonjava.sdnext.autowiredannotation.tutorial;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * @author Dinesh Rajput
 *
 */
public class DrawingApp
{
 /**
  * @param args
  */
 public static void main(String[] args) 
 {
ApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");
Circle circle = (Circle) context.getBean("circle");
circle.draw();
 }
}

spring.xml

<beans xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xmlns:security="http://www.springframework.org/schema/security" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xsi:schemalocation="http://www.springframework.org/schema/beans">
  
<bean class="com.dineshonjava.sdnext.autowiredannotation.tutorial.Circle" id="circle">
</bean>
  
<bean class="com.dineshonjava.sdnext.autowiredannotation.tutorial.Point" id="pointA">
   <qualifier value="circleBean"></qualifier>
   <property name="x" value="0"></property>
   <property name="y" value="0"></property>
</bean>
  
<bean class="com.dineshonjava.sdnext.autowiredannotation.tutorial.Point" id="pointB">
   <property name="x" value="-20"></property>
   <property name="y" value="0"></property>
</bean>
  
<bean class="com.dineshonjava.sdnext.autowiredannotation.tutorial.Point" id="pointC">
   <property name="x" value="20"></property>
   <property name="y" value="0"></property>
</bean> 
  
<bean class="com.dineshonjava.sdnext.autowiredannotation.tutorial.Point" id="center">
   <property name="x" value="10"></property>
   <property name="y" value="10"></property>
</bean>
<context:annotation-config></context:annotation-config>
</beans>

1. Spring Interview Questions and Answers
2. Spring AOP Interview Questions and Answers
3. Spring MVC Interview Questions
4. Spring Security Interview Questions and Answers
5. Spring REST Interview Questions and Answers
6. Spring Boot Interview Questions and Answers
7. Spring Boot Microservices Interview Questions and Answers
8. Dependency Injection (DI) in Spring
9. Spring IoC Container
10. What is Bean Factory in Spring
11. ApplicationContext in Spring
12. Bean Autowiring in Spring
13. Spring Bean Scopes
14. Create Custom Bean Scope in Spring Example
15. Using ApplicationContextAware in Spring
16. Spring Bean Life Cycle and Callbacks
17. BeanPostProcessor in Spring
18. BeanFactoryPostProcessor in Spring
19. Annotations in Spring and Based Configuration
20. Spring JSR-250 Annotations
21. JSR 330 Annotations in Spring
22. Spring @Component, @Repository, @Service and @Controller Stereotype Annotations
23. Method injection with Spring using Lookup method property
24. Spring AOP-Introduction to Aspect Oriented Programming
25. @Aspect Annotation in Spring
26. Spring AOP AspectJ @Before Annotation Advice Example
    
27. Spring AOP Before Advice Example using XML Config
28. Spring AOP AspectJ @After Annotation Advice Example
29. Spring AOP After Advice Example using XML Config
30. Spring AOP AspectJ @AfterReturning Annotation Advice Example
31. Spring AOP After-Returning Advice Example using XML Config
32. Spring AOP AspectJ @AfterThrowing Annotation Advice Example
33. Spring AOP After Throwing Advice Example using XML Config
34. Spring AOP AspectJ @Around Annotation Advice Example
35. Spring AOP Around Advice Example using XML Config
36. Spring AOP Proxies in Spring
37. Spring AOP Transaction Management in Hibernate
38. Spring Transaction Management
39. Spring Declarative Transaction Management Example
40. Spring AOP-Ordering of Aspects with Example
41. Spring Security Java Based Configuration with Example
42. Spring Security XML Namespace Configuration Example