Is there anything to add to java buildpath so that aspects be weaved when running the project?

Question

I have a class MakeRedAspect in my project which makes red my messages:

import java.awt.Color;

import javax.swing.JLabel;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;

@Aspect
public class MakeRedAspect {
    @Pointcut("execution(static javax.swing.JLabel[] createMultiLabel(..))")
    public void multilabelCreation() {}

    @Around("multilabelCreation()")
    public JLabel[] changeLabelColours(ProceedingJoinPoint thisJoinPoint) throws Throwable {
        JLabel[] labels = (JLabel[]) thisJoinPoint.proceed();
        for (JLabel label : labels)
            label.setForeground(Color.RED);
        return labels;
    }
}

I have added required libraries to use aspectj in my project too, and I have added the name of class in META-INF/aop.xml class too(I thought these two are enough to use an aspect class):

<aspectj>
    <aspects>

        <aspect name="mehad.aspect.general.I18N"/>
         <aspect name="mehad.aspect.general.MakeRedAspect"/>
        <aspect name="mehad.aspect.general.AspSwingWorkerExecution"/>
        <aspect name="mehad.aspect.general.RetryAspect"/>
        <aspect name="mehad.aspect.general.AspWatchScriptExecution"/>

        <!-- <aspect name="mehad.aspect.simulink.AspWatchPort"/>-->
        <!--<aspect name="mehad.aspect.simulink.AspScannerManager"/>
        <aspect name="mehad.aspect.simulink.AspComportInterface"/>
        <aspect name="mehad.aspect.simulink.AspHeaderIcon"/>
        <aspect name="mehad.aspect.simulink.AspFileUtil"/>-->

</aspects>

<!--
    <weaver options="-verbose">
    </weaver>
-->
</aspectj>

But again it doesn't make my messages red and it looks like my aspects doesn't work. I remember previously it worked fine and I guess that time I had added something to java build path,What's less in my steps that my aspects doesn't make effect?

Answer 1

It looks like you want to use load-time weaving (LTW). In order to enable LTW, you need to have the AspectJ weaving agent on the Java command line:

java -javaagent:pathto/aspectjweaver.jar ...

See AspectJ documentation.