The latest articles on DEV Community by Nikhil (@nikhilquery). https://dev.to/nikhilquery https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4132662%2F6e5740da-2728-4a1c-b3b3-0a3de3e3387c.png https://dev.to/nikhilquery en Nikhil Sat, 19 Sep 2026 09:58:05 +0000 https://dev.to/nikhilquery/my-week-1-journey-learning-java-backend-development-from-scratch-44on https://dev.to/nikhilquery/my-week-1-journey-learning-java-backend-development-from-scratch-44on <p>Hello Developers! 👋</p> <p>I am Nikhil, a BCA 1st Year student passionate about Software Engineering and Core Java Backend Development. This week, I officially kickstarted my coding journey and decided to "Learn in Public" by documenting everything I code and build. </p> <p>For the past week, I have been deeply practicing core concepts from Java, using hand-written study notes to solidify my logic. Here is a breakdown of what I learned, coded, and deployed in Week 1!</p> <h2> 📚 What I Mastered This Week </h2> <h3> 1️⃣ Java Architecture &amp; Core Basics </h3> <ul> <li>Configured my local development environment using Visual Studio Code and JDK.</li> <li>Understood how Java applications compile and execute via bytecode.</li> <li>Practiced proper naming conventions (PascalCase for classes and camelCase for methods/variables).</li> </ul> <h3> 2️⃣ Dynamic Inputs via Scanner Class </h3> <p>Instead of hardcoding values, I learned how to use <code>import java.util.Scanner</code> to take real-time values from the terminal.</p> <ul> <li> <strong>Project Built:</strong> Deployed a <code>BioDataFetcher.java</code> that handles different data types like <code>String</code>, <code>int</code>, and <code>double</code> seamlessly. <img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fj41wywjix660s851kssi.png" alt=" " width="799" height="317"> </li> </ul> <h3> 3️⃣ String Manipulation &amp; Validation Logic </h3> <p>Explored Java's internal String methods to clean and format raw input data.</p> <ul> <li>Mastered formatting using escape sequences (<code>\n</code>, <code>\t</code>).</li> <li>Practiced logic gates (<code>||</code>, <code>&amp;&amp;</code>) and the <code>return</code> statement to write robust data validation rules.</li> <li> <strong>Project Built:</strong> Refactored a secure 5-subject <code>MarksCalculator.java</code> that instantly blocks invalid entries (marks &gt; 100 or &lt; 0). <img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fhlzm8uzfj7i5ma460bvo.png" alt=" " width="673" height="662"> </li> </ul> <h3> 4️⃣ Advanced Conditional Slabs </h3> <p>Moved beyond simple control flows into complex, nested <code>if-else</code> branching logic.</p> <ul> <li> <strong>Project Built:</strong> Successfully built and cracked the differential calculation logic for a multi-slab <code>TaxCalculator.java</code> (2.5L, 5L, and 10L tax brackets). <img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fvxl79xitf82xy2eprwwc.png" alt=" " width="800" height="733"> </li> </ul> <h2> 🚀 Keeping the GitHub Graph Green! </h2> <p>Consistency is everything. I have been pushing every line of code to GitHub daily. Alongside my code, I upgraded my repository's <code>README.md</code> to a professional, chapter-wise milestone log so that anyone can track my growth.</p> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fc9em9nqznn0b3e7bphnh.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fc9em9nqznn0b3e7bphnh.png" alt=" " width="799" height="358"></a></p> <p>📂 You can check out all my clean code implementations here: <br> 👉 <strong><a href="https://github.com/NikhilQuery/JavaJourney" rel="noopener noreferrer">https://github.com/NikhilQuery/JavaJourney</a></strong></p> <h2> 🎯 What's Next? </h2> <p>Week 1 was incredible, but it's just the beginning. Up next, I am diving straight into <strong>Chapter 5: Loop Control Structures (For, While, Do-While loops)</strong> to teach my backend systems how to iterate and repeat tasks efficiently.</p> <p>If you are a fellow student or developer, let's connect and grow together! </p> <p><em>“Consistency is the key. Let's build the future, one clean commit at a time!”</em> 💻🔥</p> <h1> java #bca #backend #programming #learninpublic #freshers #softwareengineering #github </h1> backend beginners java learning