SpringIOC_init和destory和执行流程

<?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-2.5.xsd">
        
     <!-- 初始化方法 :
             init-method
           销毁方法:
               destroy-method    
     
     -->    
    <bean id="helloWorld" class="com.spring.initdestroy.HelloWord"
    init-method="init" destroy-method="destroy"></bean>
    
        
</beans>

package com.spring.initdestroy;

public class HelloWord {
    
    public HelloWord(){
        
        System.out.println("create Object");
    }
    
    public void hello(){
        System.out.println("hello word!");
    }

    
    public void init(){
        
        System.out.println("init");
        
    }
    
    
    public void destroy(){
        
        System.out.println("destory");
        
    }
    
}

package com.spring.initdestroy.test;

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

import com.spring.initdestroy.HelloWord;


public class HelloWordTest {
    
    /**
     * 
     * 在构造函数之后，立刻执行init方法
     * 如果Spring容器没有执行close方法，则不执行销毁方法
     * 如果Spring容器执行了close方法，在执行该方法之前要执行销毁方法
     * 
     */
    @Test
    public void testinitdestory(){
        
        //启动Spring容器
        ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml");
        
        //根据id把Spring容器中的bean提取出来
        HelloWord helloWord = (HelloWord) context.getBean("helloWorld");
        helloWord.hello();
        
        ClassPathXmlApplicationContext applicationContext=(ClassPathXmlApplicationContext) context;
        
        applicationContext.close();//Spring容器关闭
    }
    

}