Java Map Interface Deep Dive: Choosing the Right Structure

Today I learned about the getOrDefault() method in Java Map. This method is very useful when working with HashMap / LinkedHashMap. It returns the value of a key if it exists, otherwise it returns a default value. In my example, I used getOrDefault() to count the frequency of characters in a string. This avoids writing extra if conditions and makes the code cleaner. Thanks to my mentors for guiding us through these concepts: Saketh Kallepu Anand Kumar Buddarapu Uppugundla Sairam Kishor Kumar #Java #JavaCollections #HashMap #LinkedHashMap #Programming #LearningJourney #Codegnan

a basic java text editor (notepad) under 4kb. Why? cuz i had nothing to do, so gave it a shot, tutorial was from a book authored by E Balagurusamy. Here is Github Repo: https://lnkd.in/gq8vVnDM Follow if u liked it [on GitHub and LinkedIn ofc] ;) bye bye... . . . #Java #JavaDeveloper #CoreJava #AW #DesktopApplication #SoftwareDevelopment #Programming #ComputerScience #OpenSource #CodingProject

📘 Day 34 | Collections Deep Dive Understanding how to iterate through collections is essential in Java. Today we compare: 👉 Iterator 👉 ListIterator 👉 For-Each Loop Remember: For-each → Clean Iterator → Control ListIterator → Advanced Control Also beware of fail-fast behavior during structural modification. 📌 Save this for revision 💬 Feedback is welcome #Java #Collections #Iterator #LearningInPublic #Programming

🚀 New Post in my #TechnicalScripter2026 Series! Ever wondered how Java manages strings efficiently? In this post, I explain the concept of the String Pool and how it helps optimise memory and performance. 🔗 Explore the post below. https://lnkd.in/gQnvNaQW #Java #Programming #CodingConcepts

🚀 New Post in my #TechnicalScripter2026 Series! Understanding the difference between == and .equals() in Java is essential for every developer. In this post, I explain how both work and when to use them while comparing objects. 🔗 Read the post here: https://lnkd.in/gmbmdmK6 #Java #Programming #CodingTips

Day 31/100 – Revisiting Java Arrays & Enhanced For Loop ☕ Today I revisited the Enhanced For Loop (for-each loop) in Java while practicing array traversal. Instead of using indexes like a traditional for loop, the enhanced loop lets us directly iterate through each element of the array, making the code cleaner and easier to read. Example idea: for(int num : arr) → goes through each element one by one. Key takeaways: • Cleaner way to traverse arrays and collections • Reduces chances of index-related errors • Makes code more readable and concise Small concepts like these build a stronger programming foundation over time. Still learning. Still consistent. 🚀 #100DaysOfCode #Java #Programming #CodingJourney #SoftwareDevelopment #Consistency #LearningInPublic

Today, I strengthened my understanding of Constructors in Java and their important role in Object-Oriented Programming. Here’s what I learned: 🔹 Initialization Constructors are used to initialize the values of an object's properties when the object is created. 🔹 Setup They perform necessary setup steps required for an object to function properly. 🔹 Automatic Invocation Constructors are automatically called when an object is created — no need to call them explicitly. 🔹 Naming Convention A constructor must have the same name as the class. 🔹 No Return Type Constructors do not have any return type, not even void. I also explored: ✅ Constructor Overloading ✅ Local Constructor Chaining using this() ✅ How constructors improve code structure and maintainability Every day learning something new and building stronger fundamentals in Java 💻 #Java #OOP #Programming #LearningJourney #BTech #SoftwareDevelopment #Constructors

📘 Day 15 – Java Number Program Series Continuing my Java fundamentals journey with number-based logic programs 💻🧠 📌 Today’s Programs: 1️⃣ Reverse a number 2️⃣ Count the number of digits in a number 3️⃣ Check whether a number is a Strong number 4️⃣ Check whether a number is an Armstrong number 5️⃣ Print Fibonacci series up to a given number 💡 Day 15 Takeaway: Today was less about syntax and more about mastering number logic and mathematical reasoning in Java. #Java #JavaDeveloper #CoreJava #Programming #ProblemSolving #SoftwareDevelopment #CodingJourney #JavaLearning

Day of Learning – Arrays in Java Today’s session was all about understanding Arrays in Java and their internal behavior. We learned how to create an array to store the ages of 5 students: int[] a = new int[5]; But more importantly, we didn’t just write code — we understood the concept behind it. 🔎 Key Observations: • 📌 Dimensionality – Understanding 1D arrays • 📌 Homogeneous Data – Arrays store same type of data • 📌 Regular vs Jagged Data – Structure difference in memory • 📌 How arrays are created and managed inside the JVM Today’s class strengthened my foundation in memory allocation and array structure. Understanding what happens internally makes coding much more powerful 💡 Special thanks to Harshit T for explaining the concepts with clarity and real-time examples 🙌 #Java #Arrays #CoreJava #Programming #LearningJourney #TAPAcademy #JVM #StudentDeveloper

Explored the concept of Strings in Java, including different types like String, StringBuffer, and along with the importance of immutability. Understanding how strings work helps in writing efficient and optimized programs. A strong foundation in these concepts is essential for every developer. #Java #Programming #Learning #Strings #Coding TAP Academy Bibek Singh