How to Create Multiple Threads in Java: A Step-by-Step Guide

Day 63 of #100DaysOfCode – Multithreading in Java 🧵 Today, I explored Multithreading in Java — a powerful concept that allows multiple tasks to run at the same time, improving performance and responsiveness. 🔹 What is Multithreading? Multithreading means executing multiple threads simultaneously within a program. A thread is just a lightweight process that runs independently. 🔹 Why Multithreading? Faster execution Better CPU utilization Useful in games, web servers, chat apps, real-time processing 🔹 Ways to Create Threads in Java 1️⃣ Extending Thread class 2️⃣ Implementing Runnable interface 💡 Takeaway Multithreading makes programs efficient, but must be handled carefully to avoid race conditions and inconsistency. 10000 Coders Gurugubelli Vijaya Kumar #Java #Multithreading #FullStackDeveloper #Learning #CodeJourney #100DaysOfCode

💻 Day 18 of My Java Full Stack Development Journey Today, I explored one of the core pillars of Object-Oriented Programming — Inheritance In Java, Inheritance allows one class (child/subclass) to reuse the fields and methods of another (parent/superclass). It helps reduce redundancy, improve scalability, and make code more maintainable. Instead of duplicating logic, we extend it — making our systems more modular and maintainable. A parent class defines the structure, while the child class enhances it with additional features. #Day18 #JavaDeveloper #FullStackJourney #OOPConcepts #Inheritance

🎬 “You can’t control everything… but you can suggest it.” That’s true for life — and for Java threads too. 😄 In my latest video, I explored how to guide thread execution using thread priority and the sleep() method in Java. 💡 Here’s what we discussed: Understanding thread priorities — from MIN_PRIORITY (1) to MAX_PRIORITY (10) Why setting a high priority doesn’t guarantee faster execution (it’s all up to the scheduler!) Using Thread.sleep() to pause execution and bring synchronized rhythm between threads Real-world analogy: how schedulers decide which thread gets the stage light first This simple experiment of making “Tony” and “Star” dance in sync taught me something deeper — sometimes optimization is about timing, not control. Check out the video here 🎥 👉 https://lnkd.in/gvufSmTj #Java #Multithreading #Threads #Coding #SoftwareEngineering #LearningInPublic

Complete Overview of Multithreading in Java 🚀 I’ve summarized the entire concept of Multithreading in Java on a single page — from fundamentals to advanced topics — for a quick and clear understanding. ✨ This one-page note includes: 🔹 Introduction to Multithreading 🔹 Different Ways of Execution (Sequential, Parallel, Concurrent) 🔹 How to Achieve Multithreading 🔹 Various Implementation Approaches 🔹 Achieving Multithreading using a Single run() Method 🔹 Synchronization and Thread Safety 🔹 Life Cycle of a Thread 🔹 Daemon Threads Creating all these concepts in one structured format helps me visualize the big picture, connect the ideas, and retain concepts efficiently. 🙏 A heartfelt thanks to mentors - kshitij kenganavar, Sharath R, Harshit T and the entire TAP Academy team for making complex topics simple and engaging 🙌 #Java #Multithreading #JavaDeveloper #TAPAcademy #FullStackDeveloper #LearningJourney #CodeWithClarity #HandwrittenNotes #JavaConcepts

Day 9 of Java 50 Days of Code Challenge Imagine you’re checking your contact list — name and number — and you want to print them neatly, one by one. That’s exactly what I learned today: how to loop through a Map in Java. Maps store key–value pairs, and there are different ways to read them. Today I practiced using for-each loops to go through keys, values, and entries. Lesson of the Day: > Looping through a Map feels like flipping through your phonebook — one contact at a time. Next, I’ll explore ArrayLists with user input — to make my programs more dynamic and interactive. #Java #50DaysOfCode #Day9 #LearningJourney #CodingStory #MapIteration #JavaCollections Here’s my little example: Guess the output

"Exploring the Magic of Loops in Java! 💻✨ From simple triangles to complex symmetric designs, star patterns are more than just beginner exercises — they’re a creative way to master logic, loops, and nested conditions! Here’s my deep dive into different star pattern programs in Java — each one crafted to teach how iterations and conditions interact to create stunning console outputs. Programming isn’t just about solving problems; it’s about creating beauty through logic. 🌟 #JavaProgramming #CodingJourney #PatternLogic #ProgrammersLife #CodeArt #TechLearning #StarPattern #LogicBuilding"

🚀 Multithreading in Java — Runnable Interface Approach After implementing multithreading using the Thread class, today I tried the second method: ✅ Implementing the Runnable interface 💡 Difference from previous approach: Instead of extending Thread We create a class that implements Runnable Then we pass that object to a Thread object and call start() In this example: ✅ One thread performs addition ✅ One prints numbers ✅ One prints characters Just like before: ✔ .run() → sequential execution ✔ .start() → runs independently and concurrently This method is more flexible because Java allows multiple interface implementations, but only single class inheritance — making Runnable a cleaner approach in real-world applications. ✅ I’ve attached the code screenshot below. ⬇️ #Java #Multithreading #Runnable #Threading #Programming #TapAcademy

In Java 25, you don’t even need to write the class name, public static void main(String[] args), or System.out.println() anymore 😲 Just type: void main() { IO.println("Java 25 Version The Game Changer"); } …and it runs perfectly! 🚀 Java 25 is truly “The Game Changer.” 🔥 #Java #Java25 #Coding #Programming #Developer #JDK25 #Innovation #JavaUpdates

Day 43 of #50DaysOfLeetCodeChallenge Problem: Valid Parentheses Approach: Used a stack to keep track of opening brackets. For each closing bracket, checked if it matches the top of the stack. Returned false if there was a mismatch or stack was empty. This ensures all brackets are properly nested and closed. Key Takeaways: Stacks are perfect for problems involving nested structures. Simple traversal with O(n) time complexity and O(n) space. Feeling more confident handling pointers and references in Java! Performance: Using a stack this way really helped me understand how to manage nested elements efficiently. #LeetCode #Java #DSA #CodingChallenge #ProblemSolving #Stack #Programming

🔥 Day 7 of Java Learning Series 🔥 Topic: 🧩 StringBuffer vs StringBuilder 🔹 StringBuffer (Java) Definition: A mutable sequence of characters that allows modification of strings without creating new objects. ✅ Thread-safe (synchronized), best for multi-threaded environments. 🔹 StringBuilder (Java) Definition: A mutable sequence of characters that allows modification of strings without creating new objects. ⚡ Not thread-safe, but faster, ideal for single-threaded environments. 🧠 Summary: Both allow efficient string manipulation, but choose based on thread safety vs performance. 10000 Coders #Day7 #Java #100DaysOfCode #Programming #StringBuilder #StringBuffer #JavaLearning #CodingJourney