Explanation

Here is an explanation of the program:

1. Purpose

This program demonstrates how to handle a runtime error—specifically division by zero—using Java's built-in try-catch block. It ensures that the program handles the error gracefully without crashing.

(Note: Although the title mentions "create your own exception," this specific code demonstrates handling Java's built-in ArithmeticException.)

2. Key Concepts

Exception Handling: A mechanism to handle runtime errors so the normal flow of the application can be maintained.
try Block: Wraps the code that might cause an exception.
catch Block: Catches and handles the specific exception if one occurs inside the try block.
ArithmeticException: A built-in Java exception thrown when an illegal arithmetic operation happens (such as dividing an integer by zero).

3. Code Walkthrough

Inside try block: int result = a / (b-c);
Calculates 10 / (5 - 5), which equals 10 / 0. Because dividing by zero is impossible, Java stops executing the rest of the try block and immediately throws an ArithmeticException.
Inside catch block:
catch (ArithmeticException e)
Interprets the thrown exception and prints "Error: Cannot divide by zero." instead of letting the program crash.
After the try-catch block:
System.out.println("Program continues...");
Executes normally, proving that the program recovered successfully after handling the error.

4. Output

Error: Cannot divide by zero.
Program continues...