Pass Argument While Throwing Exception Example in Java

Introduction

Pass Argument while throwing Exception is a classic Java console program that demonstrates the concept with complete source code and sample output. Exceptions represent runtime errors; Java uses try-catch-finally to handle them safely.

This tutorial walks through the program line by line, explains how the logic works, and highlights best practices you can apply in your own code.

Syntax

throw new <exception_type> (<Argument thrown by exception>);

Pass Argument while throwing Exception Example Program

public class PassArgumentWhileThrowingException {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("Enter number to be divided by 3 : ");
        int num1 = scanner.nextInt();
        int result = num1%3;
        if (result!=0){
            throw new ArithmeticException("The input number is not divisible by 3");
        }else{
            System.out.println("The input number is divisible by 3");
        }
    }
}

Sample Output

Enter number to be divided by 3 : 
70
Exception in thread "main" java.lang.ArithmeticException: The input number is not divisible by 3
	at learnjavaprograms.PassArgumentWhileThrowingException.main(PassArgumentWhileThrowingException.java:19)
Java Result: 1

When to use

Use this pass argument while throwing exception example when learning or revising core Java syntax.

How it works

1. Execution begins in the main method — the JVM calls this method when you run the class.

2. A Scanner reads typed input from the keyboard (System.in).

3. A println / print call writes text to the console — part of the sample output below.

4. int num1 = scanner.nextInt(); updates a variable used in the calculation or output.

5. int result = num1%3; updates a variable used in the calculation or output.

6. The if statement runs the nested code only when the condition is true.

7. A println / print call writes text to the console — part of the sample output below.

8. Compare your console output with the sample output for Pass Argument while throwing Exception to confirm the program behaves correctly.

Best Practices

• Use meaningful variable and class names that describe their purpose.
• Compile and run the program locally — modify values to see how output changes.
• Read compiler errors carefully; they usually point to the exact line to fix.

Common Mistakes

• Copying code without understanding each line — practice by changing one statement at a time.
• Mismatching the public class name and the .java filename.
• Forgetting semicolons at the end of statements.