#53 | Callable VS Runnable | Java Interview

In this video, we explain the difference between Runnable and Callable — a very common Core Java & Multithreading interview question that checks your understanding of task execution, return values, and exception handling. 👨‍💻 What you’ll learn: • What Runnable is and when to use it • What Callable is and why it exists • Why Runnable cannot return a result • How Callable returns data using Future • Checked exception handling difference (interview favorite ⚠️) 🧠 Key difference: • Runnable → runs a task without returning a result • Callable → runs a task and returns a value (or throws checked exceptions) 📌 Important points: • Runnable uses run() and returns void • Callable uses call() and returns a value • Callable is typically used with ExecutorService + Future • Runnable is simpler, Callable is more powerful 🎯 Interview-ready answer: Runnable is used for tasks that do not return a result, while Callable is used for tasks that return a value and can throw checked exceptions, usually executed using ExecutorService and Future. Perfect for Core Java, Multithreading, Backend interviews, and Executor Framework preparation. #Java #CallableVsRunnable #Multithreading #Concurrency #CoreJava #JavaInterview #Wipro #TCS #Accenture #Infosys #Cognizant #Capgemini #HCL #BackendEngineering