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Design patterns are taught in most university computer science curricula. Unfortunately professors often underestimate their importance in real world systems. Design patterns are prolific in the Java development kit (JDK). To become master Java programmers, we need a deep understanding of patterns. This increases our vocabulary and helps us understand other designs faster.

Dr Heinz M. Kabutz – JGym.IO Live – Design Patterns Deep Dive – 8-9 December 2020 course with special price just for you: ~~$497~~ $92

Dr Heinz M. Kabutz – JGym.IO Live – Design Patterns Deep Dive – 8-9 December 2020

Design patterns are taught in most university computer science curricula. Unfortunately professors often underestimate their importance in real world systems. Design patterns are prolific in the Java development kit (JDK). To become master Java programmers, we need a deep understanding of patterns. This increases our vocabulary and helps us understand other designs faster.

We have been teaching patterns since 2001 and have found this set of design patterns to be the most useful. We also have a longer 4-day course that covers all the GoF patterns (and then some). This is available for self-study or as a booked in-house course.

This course includes two live sessions of 4 hours each on the 8th and 9th of December 2020 with Dr Heinz M. Kabutz. Each pattern has exercises to solve. Heinz shows model solutions and is always happy to answer your questions.

What you’ll learn – and how you can apply it

Would you like to know how a Java Specialist thinks whilst designing a Java system?
Have you ever wondered where the Gang-of-Four Design Patterns fit into Java?
Has your project become unpleasant due to maintenance issues?
Ever wanted to get rid of copy & paste code and those pesky switch and if-else statements?
Would you like a richer design vocabulary to improve your team communication?

How do these LIVE classes work?

Our LIVE classes consist of two 4-hour sessions. They are highly interactive, with exercises, discussions, and walkthroughs of the solutions. Sessions are not recorded. We welcome questions at any time during the live session.

Each 4-hour session runs from 7am to 11am Los Angeles Time.

Once you enrol in this course, we will sign you up for the webinar. Our system will send you login details. These are personal to you so please do not share them (otherwise you might lose access to the course).

LIVE Class Calendar

Course Outline

0: Welcome

Welcome to the course and overview of what design patterns are and why we should care about them

1: Builder

Intent, Motivation
Effective Java vs GoF
Polymorphic builder
Known uses in the JDK
Exercise creating a builder

2: Memento

Intent, Motivation
Avoiding memory leaks
Serialization
Known uses in the JDK
Exercise creating and using a memento

3: Proxy

Intent, Motivation
Virtual proxy
Dynamic proxy
Known uses in the JDK
Exercise with virtual and dynamic proxies

4: Strategy

Intent, Motivation
Polymorphism vs strategy
Known uses in the JDK
Exercise refactoring spaghetti code to Strategy

5: Composite

Intent, Motivation
Part-whole hierarchies
Known uses in the JDK
Exercise iterating over a composite structure

6: Visitor

Intent, Motivation
Annotation processing
Known uses in the JDK
Exercise adding a visitor to a composite

6b: Default Visitor

Intent, Motivation
Comparison to GoF visitor
Extensibility
Known uses in the JDK
Exercise refactoring the visitor to a default visitor

7: Command

Intent, Motivation
Lambdas and method references
Composite commands
Known uses in the JDK
Exercise creating command actions for devices

8: Decorator

Intent, Motivation
Object model
Client view
Known uses in the JDK
Exercise mixing decorators with iterables

9: State

Intent, Motivation
Use cases in the real world
Complexity
Known uses in the JDK
Exercise creating a state machine

10: Chain of Responsibility

Intent, Motivation
Unmanaged requests
Known uses in the JDK
Exercise creating a chain of object mappers

11: Conclusion

Course wrap-up and next steps

Preparation

This training is for beginner to intermediate Java programmers wishing to become better at writing reusable code.
Students should download and install the exercises found in the Resources chapter of the course material.

Your Instructor

Dr Heinz M. Kabutz

Heinz Kabutz is the author of The Java Specialists’ Newsletter, a publication enjoyed by tens of thousands of Java experts in over 145 countries. 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. Thanks to a supportive mother, he has now sold 5 copies.

Heinz’s Java Specialists’ newsletter is filled with amusing anecdotes of life on the Island of Crete. He is a popular speaker at all the best Java conferences around the world, and also at some of the worst. He teaches Java courses in classrooms around the world, where his prime objective is to make absolutely sure that none of his students fall asleep. He is not always successful.

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Dr Heinz M. Kabutz|Dr Heinz M. Kabutz – JGym.IO Live – Design Patterns Deep Dive – 8-9 December 2020|JGym.IO Live – Design Patterns Deep Dive – 8-9 December 2020

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Dr Heinz M. Kabutz – JGym.IO Live – Design Patterns Deep Dive – 8-9 December 2020

What you’ll learn – and how you can apply it

How do these LIVE classes work?

LIVE Class Calendar