Try-Catch Blocks

Exception handling in Java is done using the try, catch, and finally blocks. This tutorial will teach you how to handle exceptions in your code.

Using Try-Catch

The try block contains code that might throw an exception, while the catch block contains code that handles the exception:

public class Main {
    public static void main(String[] args) {
        try {
            int[] numbers = {1, 2, 3};
            System.out.println(numbers[5]);
        } catch (ArrayIndexOutOfBoundsException e) {
            System.out.println("Array index out of bounds!");
        }
    }
}
      

In this example, the try block contains code that throws an ArrayIndexOutOfBoundsException, which is then caught and handled in the catch block.

Multiple Catch Blocks

You can have multiple catch blocks to handle different types of exceptions:

public class Main {
    public static void main(String[] args) {
        try {
            int result = 10 / 0;
        } catch (ArithmeticException e) {
            System.out.println("ArithmeticException: Division by zero!");
        } catch (Exception e) {
            System.out.println("Exception: Something went wrong.");
        }
    }
}
      

Finally Block

The finally block contains code that is always executed, whether an exception is thrown or not:

public class Main {
    public static void main(String[] args) {
        try {
            int[] numbers = {1, 2, 3};
            System.out.println(numbers[5]);
        } catch (ArrayIndexOutOfBoundsException e) {
            System.out.println("Array index out of bounds!");
        } finally {
            System.out.println("This block is always executed.");
        }
    }
}
      

Continue exploring our intermediate tutorials to learn more about Java programming.