Java main() method explained

Every great Java dev started as a beginner who refused to quit. 🔥 5 mindset rules every Java dev needs: 01 — Write bad code first. Fix it later. 02 — Read errors like a detective. 03 — Stack Overflow is not cheating. 04 — Build projects, not just tutorials. 05 — Community > Competition. Are you learning Java right now? Drop your progress below! 👇 #Java #Programming #Motivation #DevMindset #CareerGrowth #2026

🚀 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

Everything looked correct… Same endpoint. Different methods. But still… only one worked 🤯 That’s when I realized — In Spring Boot, it’s not just about URLs… It’s about HTTP methods 🧠 One small detail, and your entire API behaves differently ⚠️ Many beginners miss this in real projects. 🚨 Stop just watching tutorials… Real growth = Practice + Consistency 💯 🔥 Java Daily Practice ☕️ 👉 Join & start today 🔗 https://lnkd.in/gfhqgjGd 🚀 Here’s a quick challenge 👇 💬 What do you think happens when you hit /test in browser? #SpringBoot #Java #BackendDeveloper #RESTAPI #WebDevelopment #Programming #Coding #TechLearning #DeveloperTips #LinkedInIndia

Day 2 of learning Java 🚀 Today I understood how Java actually works behind the scenes. Java code → compiled into bytecode → runs on JVM That’s why Java is platform independent 💻 Built a small program to represent this flow. Learning step by step 👍 Git-->https://lnkd.in/gZ2SPhKA #Java #CodingJourney #LearningInPublic #Beginner

🚀 Day 4/30 – Real-World Java Development Today I didn’t focus on writing code, but on how I’m learning. One thing I’m understanding — learning backend development is not about covering more topics, but about understanding how things connect. Instead of jumping into new concepts every day, I’m trying to: - Revisit what I already know - Think about where it is used in real applications - Understand the “why” behind each concept It feels slower, but definitely more meaningful. Trying to build a strong base rather than rushing through topics 👍 #30DaysChallenge #BackendDevelopment #LearningJourney #Consistency

Multithreading made more sense to me once I simplified it 👇 Multithreading = running multiple threads at the same time 😉 A thread is basically a lightweight unit of execution (smaller than a process, faster, and shares memory) Why use multithreading? ✔ Perform multiple tasks together ✔ Better performance ✔ Doesn’t block the entire program ✔ Efficient use of memory In Java, there are 2 main ways to create threads: 1️⃣ Extending the Thread class 2️⃣ Implementing the Runnable interface 👉 Runnable is generally preferred because it’s more flexible and reusable Thread lifecycle (simplified): New → Runnable → Running → Blocked → Terminated Some commonly used methods: • start() → begins execution • run() → contains the task • sleep() → pauses execution • join() → waits for another thread One thing I realized: 👉 Multithreading is powerful, but it also adds complexity So understanding when to use it matters more than just knowing how. Still learning this, but things are starting to connect now 💡 If you’ve worked with multithreading, what confused you the most in the beginning? 👇 #Java #Multithreading #BackendDevelopment #Developers #LearningInPublic #Programming

🚀 Why Runnable is Preferred Over Thread in Java? Many beginners start with extending the Thread class, but in real-world development, Runnable (or lambda) is the preferred approach. Let’s understand why 👇 🔹 Problem with Thread Class Java supports single inheritance. 👉 If you write: class A extends Thread ❌ You cannot extend any other class 🔹 Real-Time Scenario class A extends B 👉 Now you want threading also… ❌ You CANNOT do: class A extends B, Thread // Not possible 🔹 Solution: Use Runnable(Functional Interface)✅ class A extends B implements Runnable { public void run() { System.out.println("Running"); } } 👉 Now you can: ✔ Extend another class ✔ Use threading ✔ Follow clean design 🔹 Why Runnable is Better? ✔ Supports flexibility ✔ Follows good design (separates task & thread) ✔ Works with modern APIs (ExecutorService, ThreadPool) ✔ Supports lambda expressions 🎯 Key Takeaway 👉 “Since Java supports single inheritance, we use Runnable instead of extending Thread to achieve better flexibility and design.” #Java #Multithreading #JavaDeveloper #Coding #SoftwareEngineering #Learning

🚀 Mastering Exception Handling in Java Every program runs smoothly… until it doesn’t. That’s where Exception Handling becomes a game-changer. 💡 What is Exception Handling? It’s a mechanism in Java that helps manage runtime errors, ensuring the program doesn’t crash unexpectedly and continues execution gracefully. ⚙️ Why It Matters? ✔ Prevents abrupt program termination ✔ Improves code reliability and stability ✔ Enhances user experience by handling errors smartly 🧠 Key Concepts I Explored 🔹 try-catch – Safely handle risky code 🔹 finally – Ensures important code always runs 🔹 throw – Manually trigger exceptions 🔹 throws – Declare possible exceptions 📈 What I Learned ✨ Writing safer and cleaner code ✨ Identifying and debugging errors effectively ✨ Building confidence in handling unexpected scenarios 🔥 Key Takeaway “Errors are not failures — they are opportunities to make your code stronger.” Consistency + Practice = Growth 💪 #Java #ExceptionHandling #Programming #CodingJourney #Learning #50DaysOfCode #TapAcademy

Before anything exists… there’s a blueprint 👀 That’s exactly what a Class is in Java 💻 Simple. Powerful. Fundamental. Start your coding journey the right way 🚀 #Java #ProgrammingBasics #CodingLife #Developers #LearnToCode #TechEducation

Day 7 of learning Java 🚀 Practiced basics today by building an Even/Odd checker. Using simple logic with if-else is starting to make sense 👍 Small steps but consistent progress 💻 Github-->https://lnkd.in/gfirjTVh #Java #Practice #LearningInPublic