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Byron Tymvios

You will firstly need to import javax.annotation.PreDestroy before you can use the annotation. Then annotate a method with @PreDestroy

@PreDestroy
public void preDestroy(){
    //Place your pre destruction code here
}

A @PreDestroy annotated method will execute directly after the @Remove method has finished executing and before the bean instance is removed by the container. After this method has executed the bean can be garbage collected.