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Default init and destroy method in Spring configuration file with Example
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Below is an example of "Default init and destroy method in Spring configuration file with Example"
Step.1 Start a Java Project with required jars 
  1. Open Eclipse
  2. Click on menu New -> Others
  3. In wizards type "Java Project" and Select "Java Project"
  4. Click Next
  5. Enter project name as "BeanInitAndDestroyMethodAsXMLDefault", then click Next
  6. Goto Libraries tab, then click on Add External JARs, then select Spring's 21 Framework Jars and commons-logging-1.1.jar.
  7. Click Finish.
Step.2 Project Explorer Preview 
RunMyProgram.java
package com.springexamples;

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

public class RunMyProgram {
	public static void main(String[] args) {
		ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
		{
			ProcessEngine process = (ProcessEngine) context.getBean("my_process_1");
			process.doProcess();
		}
		{
			ProcessEngine process = (ProcessEngine) context.getBean("my_process_2");
			process.doProcess();
		}
		
	}
}
ProcessEngine.java
package com.springexamples;

public class ProcessEngine {
	private int processId;

	public int getProcessId() {
		return processId;
	}

	public void setProcessId(int processId) {
		this.processId = processId;
	}
	
	public void initProcess(){
		System.out.println("Process Bean "+this.processId+" initiated!");
	}
	
	public void doProcess(){
		System.out.println("Running "+this.processId+" Process!");
	}
	
	public void destroyProcess(){
		System.out.println("Process Bean "+this.processId+" Destroyed!");
	}
}
beans.xml
<?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-3.0.xsd"
	default-init-method="initProcess" 
	default-destroy-method="destroyProcess">
	
	<bean id="my_process_1" class="com.springexamples.ProcessEngine">
		<property name="processId" value="123222322" />
	</bean>
	<bean id="my_process_2" class="com.springexamples.ProcessEngine">
		<property name="processId" value="45343433" />
	</bean>

</beans>
Output 
Process Bean 123222322 initiated!
Process Bean 45343433 initiated!
Running 123222322 Process!
Running 45343433 Process!
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BeanInitAndDestroyMethodAsXMLDefault
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