Spring Framework

<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
<bean id="t" class="org.r4r.One"/>
<bean id="a1" class="org.r4r.BeforeAdvisor"/>
<bean id="a2" class="org.r4r.AfterAdvisor"/>
<bean id="pc1" class="org.springframework.aop.support.NameMatchMethodPointcut">
<property name="mappedName" value="a"/>
</bean>
<bean id="pc2" class="org.springframework.aop.support.NameMatchMethodPointcut">
<property name="mappedName" value="b"/>
</bean>
<bean id="ad1" class="org.springframework.aop.support.DefaultPointcutAdvisor">
<property name="advice" ref="a1"/>
<property name="pointcut" ref="pc1"/>
</bean>
<bean id="ad2" class="org.springframework.aop.support.DefaultPointcutAdvisor">
<property name="advice" ref="a2"/>
<property name="pointcut" ref="pc2"/>
</bean>
<bean id="proxy" class="org.springframework.aop.framework.ProxyFactoryBean">
<property name="target" ref="t"/>
<property name="interceptorNames">
<list>
<value>ad1</value>
<value>ad2</value></list>
</property>
</bean>
</beans>

package org.r4r;
public interface AB {
public void a();
public void b();

}

package org.r4r;
public class One implements AB {
@Override
public void a() {
System.out.println("a() of one invoked");
}
@Override
public void b() {
System.out.println("b() of one invoked");
}
}

package org.r4r;
import java.lang.reflect.Method;
import org.springframework.aop.AfterReturningAdvice;
public class AfterAdvisor implements AfterReturningAdvice {
@Override
public void afterReturning(Object arg0, Method arg1, Object[] arg2,
Object arg3) throws Throwable {
System.out.println("After advisor is provide service..");
}
}

package org.r4r;
import java.lang.reflect.Method;
import org.springframework.aop.MethodBeforeAdvice;
public class BeforeAdvisor implements MethodBeforeAdvice {
@Override
public void before(Method arg0, Object[] arg1, Object arg2)
throws Throwable {
System.out.println("Before advice is applied..");
}
}

package org.r4r;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
public class ProxyTest {
public static void main(String[] args) {
Resource r=new ClassPathResource("applicationContext.xml");
BeanFactory f=new XmlBeanFactory(r);
AB proxy=(AB)f.getBean("proxy");
System.out.println("Proxy obtained invoking a().");
proxy.a();
System.out.println("Proxy obtained invoking b()");
proxy.b();
}
}