https://javapro-en.svenruppert.com/tags/modernjava/Recent content in ModernJava on JAVAPRO InternationalHugoen-USThu, 23 Jul 2026 07:00:03 +0000https://javapro-en.svenruppert.com/are-classic-design-patterns-still-valid-with-modern-java/Thu, 23 Jul 2026 07:00:03 +0000https://javapro-en.svenruppert.com/are-classic-design-patterns-still-valid-with-modern-java/<p>The classic GoF design patterns helped developers build maintainable object-oriented software for a long time. In the past years the languages, like Java, have changed a lot; they evolved! What was a design pattern back then became a language feature today. This article analyses which patterns are still needed and which became obsolete.</p> <h2 id="once-upon-a-time">Once upon a time…</h2> <h3 id="object-oriented-programming">Object-Oriented Programming</h3> <p>Object-oriented programming emerged with the invention of Simula 67. Ole-Johan Dahl and Kristen Nygaard invented Simula 67 while working at the Norwegian Computing Center in Oslo to run simulations. A few years later Alan Kay et al. invented Smalltalk as a purely object-oriented programming language. In the 80s, C++ brought the breakthrough in the mainstream for object-oriented programming. The first large-scale object-oriented systems were developed. In the 90s, object-oriented programming was the dominating programming paradigm.</p>