Properties Injection 

Spring Inversion of Control (IoC) also known as Dependency Injection (DI) is a process by which objects define their dependencies with collaborating objects. The following example shows properties injection.

File Name  :   /SpringCore001/conf/collections/properties_inj.xml

view sourceprint? 01 <?xml version="1.0" encoding="UTF-8"?> 02 <beans xmlns="http://www.springframework.org/schema/beans" 03        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 04        xsi:schemaLocation="http://www.springframework.org/schema/beans 05            http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> 06   07     <bean id="complexBean" class="com.bethecoder.tutorials.spring3.basic.ComplexBean"> 08         <property name="simpleProps"> 09           <props> 10               <prop key="in">INDIA</prop> 11               <prop key="us">AMERICA</prop> 12               <prop key="uk">UNITED KINGDOM</prop> 13           </props> 14         </property> 15     </bean> 16   17     <bean id="complexBean2" class="com.bethecoder.tutorials.spring3.basic.ComplexBean"> 18         <property name="simpleProps"> 19           <value> 20             in=INDIA 21             uk=UNITED KINGDOM 22             us=AMERICA 23             cn=CHINA 24             fr=FRANCE 25           </value> 26         </property> 27     </bean> 28       29 </beans>

File Name  :   com/bethecoder/tutorials/spring3/tests/collections/PropertiesInjection.java  Author  :   Sudhakar KV Email  :   kvenkatasudhakar@gmail.com

package com.bethecoder.tutorials.spring3.tests.collections; import org.springframework.beans.factory.xml.XmlBeanFactory; import org.springframework.core.io.ClassPathResource; import com.bethecoder.tutorials.spring3.basic.ComplexBean; public class PropertiesInjection {   /**    * @param args    */   public static void main(String[] args) {     XmlBeanFactory factory = new XmlBeanFactory(                 new ClassPathResource("properties_inj.xml"));     ComplexBean complexBean = (ComplexBean) factory.getBean("complexBean");     System.out.println(complexBean.getSimpleProps());          ComplexBean complexBean2 = (ComplexBean) factory.getBean("complexBean2");     System.out.println(complexBean2.getSimpleProps());   } }

{in=INDIA, uk=UNITED KINGDOM, us=AMERICA}
{in=INDIA, fr=FRANCE, uk=UNITED KINGDOM, us=AMERICA, cn=CHINA}