Java Throw and Throws Keyword Explained | Exception Handling in Java with Examples

Welcome back to Dev Portal! In today’s video, we’ll explore two critical keywords in Java’s exception handling mechanism—throw and throws. These keywords are essential when managing and propagating exceptions in Java, ensuring robust and error-free code. This is part of our Exception Handling in Java series, where we help you master the art of writing resilient programs.

What You’ll Learn in This Tutorial:
🔹 What is the throw keyword in Java?
🔹 How to manually raise exceptions using the throw keyword
🔹 What is the throws keyword and why it’s used?
🔹 How to declare exceptions in method signatures with throws
🔹 The key differences between throw and throws
🔹 Practical use cases of both keywords with real-world scenarios

Topics Covered in This Video:
📌 Throw Keyword: Manually raise exceptions when logic demands it
📌 Throws Keyword: Declare exceptions to notify calling methods
📌 Difference between throw and throws
📌 How to handle checked exceptions using throws
📌 How to raise unchecked exceptions with throw
📌 Best practices for exception handling in Java

📂 Code Examples Covered:
1️⃣ Using throw to Validate Age
2️⃣ Using throws to Declare Exceptions in File Handling

Difference Between throw and throws:
📌 throw: Used within a method to manually raise an exception.
📌 throws: Declares exceptions that a method might throw, shifting responsibility to the calling method.

Timestamps for Easy Navigation:
⏲️ 0:00 – Introduction to throw and throws
⏲️ 0:28 – What is the throw Keyword? (Age Validation Example)
⏲️ 2:46 – What is the throws Keyword? (File Handling Example)
⏲️ 7:54 – Key Differences Between throw and throws
⏲️ 8:25 – Real-World Use Cases Explained
⏲️ 8:52 – Conclusion and Next Steps

Why This Video is Important:
* Manually handling exceptions with throw ensures smoother error management.
* Propagating exceptions using throws improves flexibility and code reusability.
* Understanding these concepts is essential for working with Java applications like file handling, APIs, and databases.

What’s Next?
🔜 In the next video, we’ll dive deeper into Custom Exceptions in Java. You’ll learn how to create your own exception classes for better error management tailored to your applications.

Other Tutorials in the Series:

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