java code for Simple Before Advice

/*
Pro Spring
By Rob Harrop
Jan Machacek
ISBN: 1-59059-461-4
Publisher: Apress
*/



///////////////////////////////////////////////////////////////////////////////////////

public interface IMessageWriter {

public void writeMessage();
}

///////////////////////////////////////////////////////////////////////////////////////

public class MessageWriter implements IMessageWriter{

public void writeMessage() {
System.out.print("World");
}

}
///////////////////////////////////////////////////////////////////////////////////////


import java.lang.reflect.Method;

import org.springframework.aop.MethodBeforeAdvice;
import org.springframework.aop.framework.ProxyFactory;

public class SimpleBeforeAdvice implements MethodBeforeAdvice {

public static void main(String[] args) {
MessageWriter target = new MessageWriter();

// create the proxy
ProxyFactory pf = new ProxyFactory();

pf.addAdvice(new SimpleBeforeAdvice());
pf.setTarget(target);

MessageWriter proxy = (MessageWriter) pf.getProxy();

// write the messages
proxy.writeMessage();
}

public void before(Method method, Object[] args, Object target)
throws Throwable {
System.out.println("Before method: " + method.getName());
}

}