The super-fast evolution of the JDK between versions 12 and 21 has made the learning curve of modern Java steeper, and increased the time needed to learn it. This book will make your learning journey ...

So, you want to get better at Java coding, huh? It’s a pretty popular language, and honestly, getting some hands-on practice is the best way to really learn it. Luckily, there are a bunch of places ...

public Map<Character, Integer> countDuplicateCharacters(String str) { Map<Character, Integer> result = new HashMap<>(); // or use for(char ch: str.toCharArray ...

Coders and developers are the architects of the tools, platforms, and services that we all use on a daily basis. Among the many, many programming languages out there, few are as recognizable, ...

A monthly overview of things you need to know as an architect or aspiring architect. Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with ...