Programming Languages for Interviews
Language rounds test whether you understand the runtime underneath your code. This track covers the areas that come up again and again — how memory is laid out, what the garbage collector actually guarantees, and how to pick a data structure and defend the choice.
▶ Start with JVM memory modelPhase 1 · Java
01JavaMemory model, collections, and the questions that follow from bothJVM memory model · Collections framework2 lessons
How to use this track
1. Follow the order. Each lesson assumes the one before it. Every page has previous and next buttons, so you can read the whole track without going back to a menu.
2. Do the practice. Lessons end with problems tagged by pattern, so you can tell whether you learned the idea or just the example.
3. Test recall, not recognition. A topic quiz at the end of each chapter is a far better check than re-reading the page.
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