Multiple Catch Blocks Example in Java

Introduction

Multiple Catch Blocks 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

try {
    // Do something
} catch (Exception1 ex) {
    // Do something with caught exception
} catch (Exception2 ex) {
    // Do something with caught exception
}

Multiple Catch Blocks Example Program

public class MultipleCatchBlocks {
    public static void main(String args[]){ 
        Scanner scanner = new Scanner(System.in);
        System.out.println("Enter the divisor to divide 100 : ");
        int divisor = scanner.nextInt();
        try{ 
            int[] array=new int[10]; 
            int result = 100/divisor;
            array[10]=result; 
        }catch(ArithmeticException e){
            System.out.println("Arithmetic exception has occurred");
        }catch(ArrayIndexOutOfBoundsException e){
            System.out.println("Array Index Out Of Bounds Exception has occurred");
        }catch(Exception e){
            System.out.println("Common exception has occurred");
        }
    }
}

Sample Output

Enter the divisor to divide 100 : 
0
Arithmetic exception has occurred

When to use

Use this multiple catch blocks 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 divisor = scanner.nextInt(); updates a variable used in the calculation or output.

5. int[] array=new int[10]; updates a variable used in the calculation or output.

6. int result = 100/divisor; updates a variable used in the calculation or output.

7. array[10]=result; updates a variable used in the calculation or output.

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

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.