Java OOP Concepts in Practice: Day 3 of 90 Days Challenge

Deep Dive into Abstraction in Core Java Just implemented and explored one of the core pillars of Java OOP — Abstraction! In my project, I used an abstract class House to define what a house should do (like pillars() and walls()), while letting each subtype decide how it does it. 📁 Code link: https://lnkd.in/gbez5BHU 🧠 What I learned: 🔹 Abstraction helps define essential behavior without implementation details 🔹 Abstract classes allow shared concrete methods (basement(), windows()) 🔹 Runtime polymorphism enables switching behavior dynamically 🔹 Clean design and reusable code The classes I worked with: WoodHouse GlassHouse ConcreteHouse —all extending the abstract House class with their specific implementations ✨ 💡 Abstraction isn’t about hiding complexity — it’s about focusing on what matters most in object design. Huge thanks to my mentor Anand Kumar Buddarapu for guiding me through strong OOP foundations. Continuing the Java journey — step by step, concept by concept. 💻🔥 #Java #CoreJava #Abstraction #OOP #Polymorphism #CleanCode #GitHub #LearningByDoing #SoftwareEngineering

💻 Day 9 — Java OOP Journey Today’s focus: Encapsulation Encapsulation = wrapping data (variables) + methods together and restricting direct access. What I learned: • Make variables private • Use public getters and setters to access them • Can add validation in setters • Keeps data safe and maintainable Example in practice: controlling a student’s name and age through methods, not directly. OOP isn’t just about writing classes — it’s about writing secure, structured, and scalable code. #Java #OOP #Encapsulation #Day9 #LearningInPublic #CodingJourney #ComputerScience

Day 22/100 – Revisiting OOP Concepts in Java ☕💻 Today I went back to the core pillars of Object-Oriented Programming: ✔ Abstraction ✔ Encapsulation ✔ Inheritance ✔ Polymorphism ✔ Association ✔ Aggregation ✔ Composition ✔ Coupling ✔ Cohesion Sometimes we rush into frameworks and advanced topics, but strong fundamentals make everything easier to understand — from backend architecture to scalable system design. Revisiting OOP reminds me that clean structure, low coupling, and high cohesion aren’t just theory… they shape real-world applications. Consistency > Intensity. Still building. 🚀 #100DaysOfCode #Java #OOPS #SoftwareEngineering #CleanCode #Consistency #ComputerScience #LearningJourney

Recently, I built a Tic Tac Toe game in Java using proper OOP principles.Instead of just making it work, I focused on clean architecture and structured design: • Separate Player, Board, and Game classes • Encapsulation using private variables • Input validation to prevent runtime crashes • Proper game flow control • Scalable design thinking (easy to extend to n × n board) Writing code is easy. Designing it properly is the real skill. Understanding concepts like encapsulation, separation of responsibility, and clean structure makes a huge difference — especially in interviews and real-world development. This project reminded me that structure builds confidence, and clarity builds better systems. Sometimes stepping back helps you come back stronger. More projects. More depth. More consistency. 🚀 #Java #OOP #SoftwareEngineering #LearningJourney #DeveloperGrowth #Consistency #Coding

Day 10 of 100 days |💻 Today I learned about Inheritance — how one class can inherit properties from another. 👨👦 Parent Class (Super Class) The class that gives properties. 👶 Child Class (Sub Class) The class that inherits and can add its own features. I also understood: 🔹 this() → refers to the current class 🔹 super() → refers to the parent class And something interesting — Java does NOT support multiple inheritance with classes Because it can cause ambiguity (Diamond Problem) Also explored: ✔ Single-level inheritance ✔ Multi-level inheritance It’s cool how Java lets you reuse code instead of rewriting everything again and again. OOP is slowly starting to make sense #Java #JavaLearning #OOP #Inheritance #ProgrammingJourney #100DaysOfCode #CodingLife #SoftwareDevelopment #TechLearning

Mastering the static keyword in Java is essential for writing efficient and organized code! 💡 It's a fundamental concept that offers several key benefits: Shareable Class Data: Enable data sharing among all class instances. Direct Method Access: Access methods without object instantiation through static methods. Initialization Simplified: Static blocks simplify one-time initialization tasks within classes. Inner Class Dynamics: Use static nested classes for clearer and more organized code. Understanding these points can level up your Java skills, whether you're starting from the basics or moving to production. What's your experience with the static keyword? Share your thoughts or favorite use cases in the comments below! 👇 Java #Programming #Coding #Tech #SoftwareDevelopment #BootcampToProd #LearnToCode

🚀 Day 3 – Object-Oriented Programming (OOP) in Java ☕💡 📌 What is Object-Oriented Programming? OOP is a programming approach where software is designed using objects, just like real-world entities. 🧱 What is an Object? An object is a real-world entity that has: 🔹 State (data) 🔹 Behavior (methods) 🧾 What is a Class? A class is a blueprint used to create objects. ✨ Core Principles of OOP 🔸 Encapsulation – Wrapping data and methods into a single unit 🔐 🔸 Inheritance – Acquiring properties from another class ♻️ 🔸 Polymorphism – One method, many forms 🔄 🔸 Abstraction – Showing only essential details 🎯 💡 Why OOP in Java? ✅ Code reusability ✅ Better security ✅ Easy maintenance ✅ Real-world problem solving 📚 Building strong Java foundations, one concept at a time 💪🔥 TAP Academy Sharath R #Java #Day3Learning #OOP #ObjectOriented #Encapsulation #Inheritance #Polymorphism #Abstraction #CodingJourney 🚀☕

Today I built a small but meaningful OOP practice project: a simple Notification System using Inheritance and Polymorphism. I created three different notification types: - Email - SMS - Push All of them extend a common base class (Notification) and override the send() method with their own behavior. This exercise helped me better understand how polymorphism allows different objects to share a unified interface while keeping their unique implementations. If you have suggestions for improving the structure or extending the project, I’d love to hear your thoughts. 🔗 GitHub Repository: https://lnkd.in/eTcEGqbY #Java #OOP #ObjectOrientedProgramming #Polymorphism #Inheritance #JavaDeveloper #CodingPractice #SoftwareDevelopment #LearningInPublic #WomenInTech #ProgrammerLife #CleanCode #TechJourney

✨DAY-16: 💻 From Messy Variables to Clean Arrays – The Power of Smart Coding! This meme perfectly shows the difference between writing code without arrays and using arrays in Java. 🔴 Without Arrays: Java Copy code int mark1 = 86; int mark2 = 71; int mark3 = 90; int mark4 = 65; 👉 Too many variables 👉 Hard to manage 👉 Not scalable 👉 Messy and inefficient Imagine handling 100 student marks like this 😅 🟢 With Arrays: int[] marks = {86, 71, 90, 65, 79}; ✅ Organized ✅ Easy to access using index ✅ Simple to loop ✅ Clean and scalable Arrays help us store multiple values of the same type in a single variable, making our code structured and efficient. 📌 Daily Life Lesson: When things are unorganized, life feels stressful. When structured properly, everything becomes simple and productive. Learn concepts clearly — code smarter, not harder 🚀 #Java #Programming #Arrays #CodingLife

Today, I focused on understanding and practicing Methods in Java, one of the most important building blocks of programming. Methods help in writing clean, reusable, and organized code. By breaking a large problem into smaller tasks, methods improve readability, maintainability, and efficiency of programs. 🔹 Explored method declaration and definition 🔹 Practiced return types and void methods 🔹 Worked with parameters and arguments 🔹 Implemented method overloading 🔹 Solved multiple problems using modular approach Through this practice, I enhanced my logical thinking and gained deeper clarity on how structured programming works in real-world applications. Consistent practice of fundamentals is helping me build a strong foundation in Java. 💻✨ #Java #Programming #LearningJourney #Coding #SoftwareDevelopment #CoreJava#TapAcademy