What You’ll Discover in Dr Heinz M. Kabutz Java Design Patterns
In my C++ code, I used the same programming techniques as C and BASIC. I had many switch statements spread throughout my codebase.
Dr Heinz M. Kabutz – Java Design Patterns
Finally…the secret weapon that makes you a success Java A programmer writes code that is easily maintained for many years. This is the same as the engineers who brought us the program. Java Virtual Machine and powerful ecosystem ….
” First of all, best wishes for this new year ! I just wanted to tell you that I have completed the Java Design Patterns Course, it was very interesting the examples were very clear and the books recommendation was awesome, I was following the course with some of the books you mentioned that I already have and I put a couple of your recommendations on my Amazon wish list.”
– Edison Martinez
Like many programmers in my generation, I studied coding using BASIC. My university introduced me to C after a brief foray into Turbo Pascal.
Professor MacGregor then introduced C++. His lectures were full of ramblings with a thick Glasgow accent and matching handwriting. Stroustrup’s writings became my bible.
I struggled throughout my university education to break the bad habits I had developed from years of C. Polymorphism, BASIC, and C. Polymorphism. Switch statements and multi were not my tools of choice.-Conditional ifs.
Heinz 1996: Writing switch statements
The generous use of CTRL+C/CTRL+V made me insanely productive. My master’s program included editing for SDL, which is used in network protocols. This was sold to a French company by my professor. They were impressed by my program when they visited me at the University of Cape Town. A few modifications were needed to make it better. I was able to complete everything in a matter of hours.
It was only when I started working that I realized everything I had learned about OBJECT.-ORIENTATION WAS WRONG
In my C++ program, I had used the same C and BASIC coding techniques. There were many switch statements scattered throughout my codebase. Every time I wanted to add a new design element to my codebase, I would need to search and modify each switch statement individually. One feature wouldn’t work if I forgot it, which happens a lot. If I forgot to change the switch for printing, my new element would appear on the screen but not on the printed copy. To make sure that everything was working properly, each element I added had to be tested individually.
Download it immediately Dr Heinz M. Kabutz – Java Design Patterns
This kind of code behavior might work if you are the only one who is working on it. It doesn’t make for happy co-workers.
French colleagues were sad to see Heinz They can leave but they are happy that he is not required to keep his current state.
My mentor gave me the GoF book when I was starting my first job. “Here, you have to read this.”
This is what you need to know.
I did. Many of the patterns were familiar to me from years of C++ programming. It was too much. What can I learn?
Martin Fowler, a Cape Town conference organizer, was my next encounter. He described “Design Patterns” As the most important book on software development of the decade.
I decided to give it another read. Perhaps I was missing something? Perhaps it was obvious at first glance.
I DID NOT UNDERSTAND ANY WORDS ON THE THIRD READ
Is it possible for a year of coding to have made me so stupid? This is a real possibility.-World coding should have an opposite effect. It should make me more valuable as programmer.
Yes, it did. However, the first time I read it, I didn’t have enough information to fully appreciate its value. Martin Fowler’s words inspired me to pick up the book again after I had given up on it. “completely obvious”.
“If one has to choose to take a single design patterns course it should be Java Design Patterns by Heinz Kabutz. I can’t recommend it enough.The class is very well organized and covers 30 design patterns. What sets it apart is how well each pattern is explained and the coverage of several less known design patterns like Memento, Essence, Object Recursion, Acyclic Visitor. Heinz spends enough time to give details how each pattern originated and its main usages. Currently its 5 edition the course covers the material in great depth, but at he same time doesn’t spend more time that necessary on each pattern. What I find very useful are the comments about common pitfalls to avoid and ways to extend and improve the implementation of these design patterns using latest language features of Java 8,9 and 10. A personal favorite of mine are the exercises that follow each design pattern allowing the student to put to practice what she learned. And if you complete all the exercises and send them to Heinz he will issue you a course completion certificate.”
Stefan Dragnev
I struggled to find the right place for each pattern. Java project. Even a pattern study group was formed that met every Friday lunch. Martin Booyens, my colleague, still describes the Visitor design. He talked about the dominee, which is Afrikaans for parson), visiting. Although I still remember his analogy twenty-years later, I was completely confused by his explanation of the rather simple pattern. It didn’t work out as well as we hoped when laypeople taught the patterns.
TEACHING DESIGN PATTERNS is difficult – many online courses have serious errors that will make it very frustrating.
Eureka! moment came during my third reading of GoF. moment. Each pattern uses polymorphism. Even the Singleton. This was the core concept used throughout. The majority of the patterns used both inheritance and composition. If in doubt, we used the composition.
If I knew this information during university, I would have been able to avoid all the nasty switch statements.
I spent hours studying patterns to better understand each design. I read books and papers and reached out to John Vlissides, one of the original authors of the GoF book. I also did technical reviews on papers he wrote for IBM (Composite1 & Composite2). Christopher Alexander was a famous architect whose pattern language was cloned by the software community. After months of preparation, it was finally time to give my first class. Java design patterns course.
This course refers to BOOKS
Christopher Alexander, The Timeless Way of Building
John Vlissides Pattern Hatching
Programming Language Pattern Design 3
Programming Language Pattern Design 4
Start with the Head Design Patterns
There are many others. There are about 30 books I have on patterns. These books are mine so you don’t have to. These are the most crucial. Pattern Hatching is a must. Get the book you want, even if it is only one.
SOMETHING INTERESTING HAPPENED
It was quite an interesting experience. I would be teaching a class in a small company. I received an offer for a larger course several months later. This would continue until the entire staff of development had taken the course.
This is why? Why was this important for companies?
After just one week of training, programmers were able to be far more productive.
They increased their team communication.
They are more able to comprehend existing designs.
It is much easier to learn design patterns when you have a coach.
The best value for money Java Training available
Ordinary Java Courses and university curricula are focused on the syntax of the language but not the semantics. Students will, if they’re lucky, learn about three types of patterns: behavioral, creational and structural. However, they will not see the practical uses of patterns.
In my Java Design Patterns Here are the locations that each pattern is used. Java Development Kit. This makes our course extremely practical. These patterns aren’t just abstract concepts. These patterns are presented on the coal face timeless software.
DESIGN PATTERNS ARE VERY IMPORTANT RIGHT NOW
Our company has been around for 18 years and has seen many revisions. Design Patterns Course is still useful and relevant. Iterator’s, Composite’s and Strategy’s patterns are just as important. Java 11 As they were with Java 1.1. Patterns are still a powerful tool for programmers, making them more productive and better able to communicate.
Java 8 method references and lambdas were added to the language. This makes Command patterns like it easier to use. Interfaces can have default methods that do not require us to use abstract class.
“Some of the exercises I managed to do alone… and some not… but those which I “”copy” I tried to understand it by looking through code and debugging it… then I watched the walkthroughs.
This course is great and I’ll be back without any breaks. It covers many patterns, and I like the way it is explained. The exercises also include good examples and uses cases.
Not to mention you as an instructor. I love the way you share your vast knowledge and teach it in a natural way. Great course, well worth it!
– Vatroslav Vukovic
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“The course has a lot of code examples to better understand the various design patterns.What I’ve learned: capturing/non-capturing lambdas, use only ConcurrentHashMap since Java 8, performance considerations, etc. The difficulty of the course is exactly right: difficult code samples and patterns are explained in more detail. What I also liked: Solution walkthroughs of the exercises with live coding. Sometimes Heinz came up with better solutions than he had in his model answers.He answers all questions very carefully.”
Anonymous, Feedback from an insider-Graz, Austria: House Course
Forward-looking references in books and courses are not something that anyone likes. “Don’t worry about this, we will do it in a later chapter” It can distract us. We try not to have as many as possible.
We provide an extensive introduction to Java on modern virtual computers. Many of the concerns raised in the original Gang were still relevant today.-This is-From static compilation, four books were created. Java You can optimize your code-The-fly. If the JIT compiler is able to determine that it’s safe, it can inline polymorphic method call calls. It will undo any optimization if a different type of subclass is discovered later. Inlined costs for inrection are also included. Too many objects? You don’t have to worry, the garbage collector does an excellent job managing them.
One of the ing precepts, is that of Meronomy. This defines what we mean. “part-whole hierarchy”. Because we want to avoid memory leaks in designs, we care about Meronomy. With memory leaks, it should be the end. JavaAutomatic memory management. They still occur when we ignore meronomy.
An important concept to consider is the intrinsic versus extrinsic states. You will find it in many of the patterns. You can often rewrite the implementations to switch from one to the next. While neither is ideal or bad, extrinsic often allows us to share objects. Intrinsic can be a bit more object-orientated.
THE GOLDEN ORDER
We now have simple patterns that can be found everywhere, after our thorough introduction. Patterns Like Strategy, Iterator Proxy, and Abstract Class.
Many books and courses are based on the Singleton and Factory Method of creating patterns. These are simple patterns, so it is assumed. They aren’t. Singleton’s patterns are complex. The pattern is flexible and allows for multiple instances of the pattern. “Singleton”. Lazy initialization vs. eager? This is a common mistake in courses, and the code can cause problems in production.
The Quintessential Singleton
These patterns are sourced both from the original Gang as well as the second Gang.-This is-Four books by Erich Gamma, et al. and proceedings from Pattern Language of Program Design conferences. They can be classified into three types: behavioral (B), creational (C), and structural (S). This is the golden order we should follow in this maze of patterns.
Abstract Class (B), Builder, Essence (C), Momento (B), Proxy/S), Flyweight/S), Strategy (B), Null Obj (B), Visitor/B), Acyclic Visitor/B), Visitor/B), Visitor/B), Acyclic Visitor/B), Object Recursion/B), Visitor/B), Singleton/C, State (B), Facade/S), Prototype/C), Abstract Factory/C), Interpreter/B), Mediaator (B), Bridge (S), Chain Of Responsibility (B), Chain of Respons)
EXERCISES & EXERCISES – EXERCISES & EXERCISES – EXERCISES / EXERCISES / EXERCISES / EXERCISES / EXERCISES / ExERCISES?
Learning is more about doing than listening. Each pattern is followed with exercises that we solve in order to gain a better understanding. Each exercise has a walkthrough and model solution. I will also show you how to solve the problem. Some exercises are very difficult. Others are easier.
Exercises, exercises, exercises, exercises
You can choose from a variety of exercises to help you create your patterns.
Use Patterns In the JDK: Practical Application of Patterns Using Existing Classes from the Java Kit for Development
Patterns for refactoring existing designs: Make bad designs more manageable by using design patterns.
Fun and games: Not all exercises can be used in a practical way. Lab rats can be reanimated using memento, and rappers are trained to sing the adapter pattern.
COURSE COMPLETION ZERIFICATE
Your employer purchased this shiny new course for you. What can you do to prove that you have completed the course?
Teachable tracks the progress of your course. You can mark each section as completed at the end. “completed”. A course completion certificate is available once you have completed at minimum 88%. This certificate can be claimed by submitting completed exercises. Heinz Kabutz You can mark. Your course price includes the certificate and cost of marking.
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This is our belief that it’s the best value-For-Money Course in the Java world. It can be used at all levels Java Knowledge: Intermediate, Advanced and Beginner. Each person will be able to learn something that will make them better. Java programmers.
We offer a 100% money back guarantee to put our money where it is needed.-Within 30 days of purchase, the course is guaranteed to be returned. No questions asked. Let us know if this training is not for you, and we will reimburse you.
Course Curriculum
Download it immediately Dr Heinz M. Kabutz – Java Design Patterns
Slides
Design Patterns Slides and Exercises
Playground Package
The Course
1.1. Lay of the Land (8.40).
1.2. Why Learn? Patterns (15:35)
1.3. What is a Design Pattern (6.01)
1.4. References in the Course (7:46).
1.5. Unified Modeling Language (UML), 14:02
1.6. Java Memory Management (11.41)
1.7. Java HotSpot Optimizations (6.53)
1.8. Modern Java Syntax (3.56)
2. Abstract Class Pattern (PLoPD4) (15.35)
2.1. Abstract Class Pattern Exercise Walkthrough (15.52).
3. Builder Pattern (GoF) and Effective Java) (19:43)
3.1. Builder Exercise 1 Walkthrough (6.46)
3.2. Builder Exercise 2 Walkthrough (2.15)
4. Essence Pattern (PLoPD4) (10.39)
Preview
5. Memento Pattern (GoF) (22:15)
5.1. Memento Pattern Exercise 1, Walkthrough (10.59).
5.2. Memento Pattern Exercise 2 Walkthrough (3.07)
6. Proxy Pattern for the GoF (32.18)
6.1. Proxy Pattern Exercise 1, Walkthrough (3.47)
6.2. Proxy Pattern Exercise 2 Walkthrough (7.22)
7. Flyweight Pattern (GoF), (51:37).
8. Strategy Pattern (GoF) (33:34)
8.1. Strategy Exercise 1 Walkthrough (15.02)
8.2. Strategy Exercise 2 Walkthrough (9.03).
9. Null Object pattern (PLoPD3) (16.56)
9.1. Null Object Exercise Walkthrough (12.11).
10. Iterator Pattern, GoF (27.31)
10.1. Iterator Exercise Walkthrough (9.44).
11. Factory Method (GoF, Refactoring and Factory Method) (27.40).
12. Template Method Pattern (GoF). (11:15).
12.1. Template Method exercise (8:17)
13. Composite Pattern (GoF), 12:33
13.1. Composite Exercise Walkthrough (17.20).
14. Visitor Pattern (GoF), (17:28).
14.1. Visitor Exercise Walkthrough (8.06)
15. Acyclic Visitor Pattern (12:52).
15.1. Walking through the Acyclic Visitors Exercise Program (5:01).
16. Object Recursion Model (PLoPD4) (9.04).
17. Default Visitor Model (PLoPD3) (19.47).
17.1. Walkthrough of the Default Visitor Exercise (12:52).
18. Adapter Pattern, GoF (21:54).
18.1. Adapter exercise walkthrough (12:19).
19. Command Pattern (GoF), (14:24).
19.1. Command Exercise 1 Walkthrough (5.31)
19.2. Command Exercise 2 Walkthrough (2.10)
20. Decorator Pattern (GoF, 28:54)
20.1. Decorator Exercise Walkthrough (11.31)
21. Extension Object Pattern (34.09)
22. Singleton Pattern (GoF), (40:50).
22.1. Singleton Exercise 1 Walkthrough (0.58)
22.2. Singleton Exercise 2 Walkthrough (1.33)
22.3. Singleton Exercise 3 Walkthrough (14.11).
23. State Pattern (GoF), (24:47).
23..1. State Exercise Walkthrough (20.27).
24. Facade Pattern (GoF) (11:15)
24.b. Session Facade Pattern (JEE) (3:41)
25. Prototype (17.11)
26. Abstract Factory Pattern (GoF), (10:29).
26.1. Abstract Factory Exercise Walkthrough (5.14).
27. Interpreter Pattern (GoF) (16:20)
27.1. 27.1
28. Mediator Pattern: GoF (13.03).
29. Observer pattern (GoF) (28.13)
29.1. Observer Exercise Walkthrough (8.20).
30. Bridge Pattern (GoF) (13.44).
30.1. Bridge Exercise Walkthrough (10.07)
31. Chain of Responsibility (GoF) (10.35)
31.1. Walkthrough of the Chain of Responsibility Exercise (13:04).
32. Conclusion (9:44).
“Revision of patterns I knew before, and learning of new patterns. Learning new Java features in the exercises. Best practices, like using ConcurrentHashMap. Learned useful new IntelliJ shortcuts. Live coding sessions by Heinz.”
Anonymous, Feedback from an insider-Graz, Austria: House Course
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“Pattern advantages / disadvantages in contrast with later Java versions (lots of small objects are not so expensive now…) Exercises were fun. Example unit test gave good direction towards solutions. Liked the structure checking tests.”
Anonymous, Feedback from an insider-Graz, Austria: House Course
Your instructor
Dr Heinz M. Kabutz
Dr Heinz M. Kabutz
Heinz Kabutz The author of The Java Specialists’ Newsletter, a publication enjoyed by tens of thousands of Java More than 145 countries have experts in this field. His book “Dynamic Proxies (in German)” was #1 Bestseller on Amazon.de in Fachbücher für Informatik for about five minutes until Amazon fixed their algorithm. He has now sold five copies thanks to his supportive mother.
Heinz’s Java Specialists’ newsletter is filled with amusing anecdotes of life on the Island of Crete. He is a well-known speaker at all the best Java Conferences around the world and at some of the worst. He teaches Java Courses in classrooms around world where his main objective is to ensure that his students do not fall asleep. He is not always successful.
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