14 condensed interview guides and cheat sheets — JavaScript, React, Java, Spring Boot and software engineering. Open the search bar above to pick a guide, or browse below.
JavaScript + Node.js 1
React + Frontend 4
React Ultimate — 200 Points200 React points — hooks, state, props, context, performance, testing, and the ecosystem patterns interviews and daily work demand.
React Cheat SheetQuick-reference React facts — components, JSX, lifecycle, hooks, and the patterns you reach for every single day.
React + TypeScript GuideReact with TypeScript end to end — typing props, hooks, events, generics, and tsconfig for large, maintainable React apps.
Frontend Interview QuestionsHTML, CSS, JavaScript and React interview questions with worked code examples — the complete frontend interview prep pack.
Pure Java 5
Java Ultimate — 200 Points200 core Java points — language fundamentals, OOP, collections, streams, exceptions, and the JVM essentials.
Java Software EngineerJava interview prep for software engineering roles — language deep-dives, best practices, and real-world production patterns.
Java Objects & CollectionsJava OOP and the Collections framework in depth — classes, interfaces, generics, and the internals of List, Set, and Map.
Java Cheat Sheet 2Fast Java reference — core syntax, keywords, and APIs distilled into compact cheat-sheet form.
Java in 75 PointsSeventy-five essential Java points — a quick tour of everything you must know before walking into a Java interview.
Spring Boot 3
Java + Spring Guide — 125 PointsJava and Spring together — 125 points on core Java plus Spring fundamentals, dependency injection, and Spring MVC.
Spring Boot Ultimate — 200 PointsThe full Spring Boot reference — auto-configuration, REST APIs, JPA, security, testing, and production-ready patterns.
Spring Boot Guide 2026Modern Spring Boot essentials — starters, annotations, actuator, and building production-ready services.