Practice

Interview Preparation

Practice common interview questions by topic. Swipe the card or use the controls—reveal answers and code when you are ready.

100 questions

Core Java

One hundred in-depth interview questions from JVM fundamentals through collections, concurrency, NIO, the memory model, and modern Java — beginner to expert.

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100 questions

JavaScript

One hundred ECMAScript-focused questions: fundamentals, asynchronous programming, objects and modules, and runtime semantics — forty beginner, forty mid-level, and twenty expert.

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100 questions

React

One hundred in-depth interview questions on components, hooks, concurrent React, performance, accessibility, and production patterns.

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100 questions

Spring Boot

One hundred practical interview questions on auto-configuration, web APIs, data access, security basics, Actuator, and shipping Boot services — aimed at junior to mid-level developers.

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100 questions

TypeScript

One hundred questions on the type system, compiler options, generics, inference, and production patterns — forty beginner, forty mid-level, and twenty expert, including scenario-based items.

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