Source Code : Aspect Hello World Example

Java Is Open Source Programming Language You Can Download From Java and Java Libraries From http://www.oracle.com. Click Here to download
We provide this code related to title for you to solve your developing problem easily. Libraries which is import in this program you can download from http://www.oracle.com. Click Here or search from google with Libraries Name you get jar file related it

Aspect Hello World Example

/*
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 org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;


public class MessageDecorator implements MethodInterceptor {

    public Object invoke(MethodInvocation invocation) throws Throwable {
        System.out.print("Hello ");
        Object retVal = invocation.proceed();
        System.out.println("!");
        return retVal;
    }

}

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

public class HelloWorldAOPExample {

    public static void main(String[] args) {
        MessageWriter target = new MessageWriter();
        
        // create the proxy
        ProxyFactory pf = new ProxyFactory();

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


        MessageWriter proxy = (MessageWriter) pf.getProxy();
        
        // write the messages
        target.writeMessage();
        System.out.println("");
        proxy.writeMessage();
    }
}
           
       

Thank with us