Java Method Definition and Examples

Day 6 - Externalization Vs Serialization in Java !! As we know, the Serializable interface in Java allows us to perform serialization, effectively turning an object into a byte stream for storage or transmission. What is externalization ? 💫 Externalization is a customized serialization mechanism. Unlike the Serializable marker interface, it allows developers to explicitly define the logic for saving and restoring an object's data through marshalling and unmarshalling. #java #backend #coding #developer #learning #springboot

Leetcode Practice - 3. Longest Substring Without Repeating Characters The problem is solved using JAVA. Start from first letter Keep adding letters until you see a duplicate When duplicate comes → move start forward Keep track of maximum length #LeetCode #Java #StringHandling #CodingPractice #ProblemSolving #DSA #DeveloperJourney #TechLearning

Same method… different behaviors? 🤯 Welcome to Method Overloading in Java! Why write multiple methods when one name can handle it all? ✅ Cleaner code ✅ Better readability ✅ Smarter programming Start thinking like a developer, not just a coder 💻 #Java #Programming #OOP #CodingLife #Developers #LearnToCode

Most developers run the code. But real problem-solvers dry run it first. 🧠✍️ Let’s test your Java fundamentals 👇 #Java #Programming #CodingChallenge #Developers #Learning #Tech #SoftwareTesting class Test7 { public static void main(String[] args) { System.out.println("Start"); int x = 2; System.out.println(demo(x, 3)); System.out.println("End"); } public static String demo(int a, int b) { System.out.println(a + b); return "Value: " + (a + test(a)); } public static int test(int n) { System.out.println("Inside test"); return n * 5; } }

🔐 Mastering inheritance starts with mastering access modifiers! Understanding how public, protected, default, and private work across packages and subclasses is key to writing secure, maintainable Java code. #TapAcademy #Java #Inheritance #AccessModifiers #Encapsulation #OOP #ProgrammingTips #CleanCode

💻 Java Practice Update | Largest Number in Array 📌 Problem: Find the largest number in an array 🧠 Approach: Assume first element as max Traverse array Compare each element Update max if larger value found ⚙️ Key Learning: Strengthens logic building and is useful in automation testing scenarios like validating UI tables and API responses. #Java #Arrays #CodingPractice #SDET #AutomationTesting interviewchat codeonedigest cod

🚗 Understanding Composition in Java (Strong Relationship) Today I learned an important OOP concept — Composition. 📌 In this example: A Car class contains an Engine object The engine is created inside the car → showing a strong relationship 👉 This means: If the Car does not exist, Engine also cannot exist independently 💡 Key Concept: Composition represents a "has-a" relationship where one object is dependent on another. 🔹 Flow: Car object is created Engine object is automatically created inside Car Calling startCar() → Engine starts first Then Car starts 🖥️ Output: Engine started Car started 🔥 This concept is very important for writing clean and modular code in Java. #Java #OOP #Composition #SDET #AutomationTesting #CodingJourney

Understanding Java Class Loading & Memory Areas Today, I learned how Java manages memory during Class Loading. It helped me understand what happens behind the scenes when a program runs.  Simple Example: class Demo { static int x = 10; // Stored in Method/Class Area void show() { int y = 5; // Stored in Stack System.out.println(x + y); } } public class Main { public static void main(String[] args) { Demo obj = new Demo(); // Object stored in Heap obj.show(); } } **When this program runs: 1.Class is loaded into Method Area 2.Static variable (x) is initialized once 3.Object (obj) is created in Heap 4.Method execution happens in Stack #Java #Programming #LearningJourney #SDLC #Coding #Developer #CareerGrowth

🚀 Java 8 Method Reference – Real-Time Example Want to write clean and readable code? 👉 Use Method References 🔥 💡 Example: Employee::new → Constructor reference No need for lambda → cleaner and simpler code ✅ ✔ Less boilerplate ✔ Improved readability ✔ More professional code #Java #Java8 #MethodReference #BackendDeveloper #Coding #Learning #CleanCode

Day 35/100 – Exploring ListIterator in Java 🔁 Today I explored the use of ListIterator in Java while working with ArrayList. Unlike a normal iterator, ListIterator allows traversal in both directions, making it more flexible when working with lists. Key learnings: • Traverse elements using next() • Move backward using previous() • Check elements using hasNext() and hasPrevious() • Useful for bidirectional iteration and modifications Understanding different ways to iterate through data structures helps in writing more efficient and flexible code. Learning something new every day, one step at a time. 🚀 #100DaysOfCode #Java #ArrayList #DataStructures #CodingJourney #LearningInPublic