Event Handling in Spring

package com.dineshonjava.sdnext.eventHandling.tutorial;

import javax.annotation.Resource;

import org.springframework.context.ApplicationEventPublisher;
import org.springframework.context.ApplicationEventPublisherAware;
import org.springframework.context.MessageSource;
import org.springframework.stereotype.Controller;

/**
 * @author Dinesh Rajput
 *
 */
@Controller
public class Circle implements ApplicationEventPublisherAware
{
 private Point             center;
 private ApplicationEventPublisher publisher;
 
 /**
  * @param center the center to set
  */
 @Resource(name="pointB")
 public void setCenter(Point center)
 {
  this.center = center;
 }

 public void draw()
 {
             System.out.println("Circle is Drawn");
             DrawEvent drawEvent = new DrawEvent(this);
             publisher.publishEvent(drawEvent);
 }

 @Override
 public void setApplicationEventPublisher(ApplicationEventPublisher publisher)
 {
  this.publisher = publisher;
 }
}

package com.dineshonjava.sdnext.eventHandling.tutorial;

/**
 * @author Dinesh Rajput
 *
 */
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;
 } 
}

package com.dineshonjava.sdnext.eventHandling.tutorial;

import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.stereotype.Component;

@Component
public class MyEventListener implements ApplicationListener
{

 @Override
 public void onApplicationEvent(ApplicationEvent event) 
 {
  System.out.println(event.toString());
 }

}

package com.dineshonjava.sdnext.eventHandling.tutorial;

import org.springframework.context.ApplicationEvent;

public class DrawEvent extends ApplicationEvent
{

 /**
  * Dinesh Rajput
  */
 private static final long serialVersionUID = 6973014356268900607L;

 public DrawEvent(Object source)
 {
  super(source);
 }
 
 public String toString()
 {
  return "Draw event occurred";
 }
}

<beans xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xsi:schemalocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<context:annotation-config></context:annotation-config>
<bean class="com.sdnext.dineshonjava.eventHandling.tutorial.Point" id="pointB">
    <property name="x" value="10"></property>
    <property name="y" value="20"></property>
</bean>
<context:component-scan base-package="com.sdnext.dineshonjava.eventHandling.tutorial"></context:component-scan>
</beans>

package com.dieshonjava.sdnext.eventHandling.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();
 }
}

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