Beans and Client - Java

Next is the beans.xml file. It contains configuration information for the POJO and its properties.

<beans>

<bean id=”SimpleInterestBean”

class=”org.me.SimpleInterestCalculatorBean”>

<property name=”principle”>

<value>10000.00<value>

</property>

<property name=”years”>

<value>10.00<value>

</property>

<property name=”rate”>

<value>9.50<value>

</property>

</bean>

<beans>

Last is the code for Client.java. It first loads the configuration, then gets a reference for BeanFactory and retrieves the instance of SimpleInterestCalculatorBean. After that, it calls the calculate method to get the calculated simple interest. Here is the code:

import java.io.*;

import org.springframework.beans.factory.*;

import org.springframework.beans.factory.xml.*;

import org.springframework.core.io.*;

public class Client

{

public static void main(String args[]) throws Exception

{

try

{

System.out.println("please Wait.");

Resource res = new ClassPathResource("beans.xml");

BeanFactory factory = new XmlBeanFactory(res);

SimpleInterestCalculatorBean interest=

(SimpleInterestCalculatorBean)factory.getBean(“SimpleInterestBean);

System.out.println(interest.getInterest());

}

catch(Exception e1)

{ System.out.println(""+e1); }

}

}

That completes the introduction to Spring Framework. What has been described here is just the tip of the iceberg. In the future, I will be discussing each of the components of Spring Framework in depth. Till then…