A single-page, at-a-glance revision project for core Java concepts.
This project is designed as a fast reference and structured summary sheet covering essential Java topics without unnecessary depth.
It focuses on clarity, JVM mental model, real-world usage, and modern Java fundamentals.
- Quick revision before interviews
- Rapid recall of core Java concepts
- Clear mental model of JVM, memory, and execution flow
- Practical, production-focused reminders
- Strong OOP + Collections + Exception handling foundation without overload
- Java basics and syntax
- Data types, variables, and type casting
- Operators and control flow
- Methods and method overloading
- OOP fundamentals (class, object, inheritance, polymorphism, abstraction, encapsulation)
- Interfaces vs abstract classes
- this and super keyword
- Constructors and initialization
- Static keyword and static blocks
- Access modifiers and packages
- String, StringBuilder, StringBuffer
- Arrays and common patterns
- Wrapper classes and autoboxing
- Exception handling (try/catch/finally, throw/throws, custom exceptions)
- Collections framework (List, Set, Map, Queue)
- Generics basics
- Comparable vs Comparator
- Hashing and equals/hashCode
- Immutability and defensive copying
- Java 8+ essentials (lambda, functional interfaces, streams, optional)
- Stream operations (map, filter, reduce, collect)
- Date and time API (java.time)
- File I/O basics (File, Path, Files)
- Serialization basics
- Multithreading basics (Thread, Runnable)
- Concurrency essentials (synchronized, locks, volatile)
- Executor framework basics
- JVM basics (JRE vs JDK, classloader, heap vs stack, GC basics)
- Common interview traps and best practices
- React
- Vite
- styled-components
Single page only
Section-based navigation
Searchable and expandable content
No blog-style content, only structured notes
Each topic is modular and collapsible for fast scanning.
npm install
npm run devComplete core Java knowledge in one scrollable page. No fluff. No repetition. Just essentials.