Coding⏱️ 2 min read📅 2026-05-31

How to Fix: Why is "throws Exception" necessary when calling a function?

The compiler reports that methods show2(), show3(), and main() are necessary because they call a method (show()) that throws an exception. The 'throws' keyword is used to specify the types of exceptions that a method can throw, allowing the caller to handle them properly.

Quick Answer: The 'throws' keyword in Java is necessary to declare methods that may throw checked exceptions, which are exceptions that are not caught by a try-catch block.

📋 Table of Contents

  1. ⚠️ Common Causes
  2. 🚀 How to Resolve This Issue
  3. ✨ Wrapping Up

The `throws Exception` clause is necessary in Java when calling a function because it indicates that the method may throw an exception. In this specific example, the `show()` and `main()` methods are declared to throw exceptions, which means they can potentially encounter errors during execution.

⚠️ Common Causes

  • Calling methods that are declared to throw exceptions without proper exception handling.

🚀 How to Resolve This Issue

Method 1: Analyzing the Code

  1. Step 1: Review the code to identify which methods are declared to throw exceptions.

Method 2: Adding Exception Handling

  1. Step 1: Wrap the code that calls these methods in a try-catch block.

✨ Wrapping Up

By following these steps, you can identify and resolve the issue of methods being declared to throw exceptions without proper exception handling.

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