Understand the Classics
Design patterns often make a design stronger. This is not a new idea, so it is no surprise that many design patterns are built into the Java class libraries. If you can spot the design pattern in a body of code you can grasp the design yourself and communicate it to others who understand design patterns. For example, if a developer understands the DECORATOR pattern, it is meaningful to explain that Java streams are decorators.
Here is a test of your understanding of some of the classic examples of design patterns that appear in Java.
How do Swing listeners use the OBSERVER pattern?
Why do menus often use the COMMAND pattern? How can you use the COMMAND pattern with Swing menus?
Why are drivers a good example of the BRIDGE ...
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