In this method we can define a method as initialization method so that Spring can call that method once setting all properies and checking the dependencies
I am creating init() method inside the Car bean
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package com.kayak; public class Car { private String name; public Car() { System.out.println("Constructor method called"); } public void init() { System.out.println("Init method called"); } public String getName() { return name; } } |
Now you have to add init-method attaribute to the bean tag and set the value as name of the method init
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<?xml version = "1.0" encoding = "UTF-8"?> <beans xmlns = "http://www.springframework.org/schema/beans" xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation = "http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <bean id="car" class="com.kayak.Car" init-method="init" > </bean> </beans> |
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public static void main(String[] args) { ApplicationContext ctx = new ClassPathXmlApplicationContext("bean.xml"); Car car=(Car)ctx.getBean("car"); } |
How do you fire the event when your bean is destroyed
You can simply add mthod to your Bean and update your bean.xml
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<bean id="car" class="com.kayak.Car" init-method="init" destroy-method="destroy" > </bean> |
Now you can see the following output:
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Feb 16, 2018 4:24:27 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions INFO: Loading XML bean definitions from class path resource [bean.xml] Constructor method called Init method called BUILD SUCCESSFUL (total time: 2 seconds) |