https://soft.vub.ac.be/ajtraining/ 2026-05-16T01:31:29+00:00 https://soft.vub.ac.be/ajtraining/ https://soft.vub.ac.be/ajtraining/_media/wiki:dokuwiki-128.png text/html 2021-02-05T12:49:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://soft.vub.ac.be/ajtraining/basics:ex1?rev=1612529368&do=diff Intro Ex1 Ex2 Ex3 Ex4 Ex5 Ex6 Ex7 The Basics: Exercise 1 Create an aspect named Basics with an auxiliary method output: public aspect Basics { public void output(String tag, Object o) { System.out.println(tag + ": " + o); } } Next, add an advice to this aspect to prints a string just before the execution of the text/html 2021-02-05T12:49:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://soft.vub.ac.be/ajtraining/basics:ex2?rev=1612529368&do=diff Intro Ex1 Ex2 Ex3 Ex4 Ex5 Ex6 Ex7 The Basics: Exercise 2 Add another advice to the Basics aspect to print out a message immediately before the execution of all methods of Application whose name starts with the letters “st”. *.. Since the advice applies to different methods, print the signature of the join point in the advice body using the following snippet: text/html 2021-02-05T12:49:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://soft.vub.ac.be/ajtraining/basics:ex3?rev=1612529368&do=diff Intro Ex1 Ex2 Ex3 Ex4 Ex5 Ex6 Ex7 The Basics: Exercise 3 Add another advice to the Basics aspect to print out a signature before the execution of all non-static methods of class Application, except for the start method. * The signature pattern may contain modifiers (such as text/html 2021-02-05T12:49:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://soft.vub.ac.be/ajtraining/basics:ex4?rev=1612529368&do=diff Intro Ex1 Ex2 Ex3 Ex4 Ex5 Ex6 Ex7 The Basics: Exercise 4 Add another advice to the aspect Basics that prints a message containing the input value of the method stop immediately before it is executed. args(Var,...)Var Rerun the application and verify the output. ---------- text/html 2021-02-05T12:49:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://soft.vub.ac.be/ajtraining/basics:ex5?rev=1612529368&do=diff Intro Ex1 Ex2 Ex3 Ex4 Ex5 Ex6 Ex7 The Basics: Exercise 5 Add another advice to the aspect Basics that only prints a message when the stop method is executed through the start method. cflow(Pointcut) Rerun the application and verify that the advice does not trigger when stop text/html 2021-02-05T12:49:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://soft.vub.ac.be/ajtraining/basics:ex6?rev=1612529368&do=diff Intro Ex1 Ex2 Ex3 Ex4 Ex5 Ex6 Ex7 The Basics: Exercise 6 Add another advice in the aspect Basics to print a message after a method of class Application exits with an exception. The message should contain a description of the exception. after() throwing(Exception e)before Rerun the application and verify that the advice outputs a description for the exception raised inside of the text/html 2021-02-05T12:49:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://soft.vub.ac.be/ajtraining/basics:ex7?rev=1612529368&do=diff Intro Ex1 Ex2 Ex3 Ex4 Ex5 Ex6 Ex7 The Basics: Exercise 7 From the aspect Basics, declare that the class Application implements the interface Iterable<String>. declare parents: Type implements Type This will raise a compiler error since Application does not provide an implementation for the text/html 2021-02-05T12:49:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://soft.vub.ac.be/ajtraining/basics:intro?rev=1612529368&do=diff Intro Ex1 Ex2 Ex3 Ex4 Ex5 Ex6 Ex7 The Basics: Intro In this exercise, you will use aspects to instrument a dummy class in order to get acquainted with the basic techniques of AspectJ: pointcuts, advices and inter-type declarations. Set-up * Create a new AspectJ Project in Eclipse