In 1994, the Gang of Four brought us 23 different design patterns that helped thousands, perhaps millions, of developers develop better code and use a common language. Nearly three decades later, improvements in the Java language allow us to revisit most of these design patterns and propose new ways to solve the same problems.

Join us for this talk where we will do some live refactoring of code using older design pattern implementations into new code, using the latest enhancements in Java 20. Come and see how Strategy, Template Method, Visitor, Command, Decorator, Builder and other patterns can benefit significantly from modern features of Java such as lambdas, records, switch expressions and much more.

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