// must compile together with security and extensionmethod aspects

privileged aspect extendinterface  // add method to existing interface
{
    public abstract void stuinterface.whine(); 

    public void student.whine()
    {
	System.out.println("2pm is too early for me!  Too much math!");
    }

    student s; // instance of student to be captured on creation

    after(student stu) : execution(public student+.new(..)) && target(stu)
	{ s = stu; } // capture student instance to be used in next advice:
    
    after() : execution(public static void *.main(String[]))
	{
	    System.out.print(s.name+" is whining: ");
	    s.whine();
	    s.changeGPA(4.0);  // used with next aspect
	}
}

// precedence of aspects can be declared thus (compiler will detect cycles):
/*
aspect orderaspects
{
    declare precedence: extendinterface, *; // give this advice precedence 
}                                           // over all others
*/ // commented out because of conflict with another declaration