Try-Catch Block

The try-catch block is the most common way to handle exceptions:

 public class ExceptionHandlingExample {
    public static void main(String[] args) {
        try {
            int result = divide(10, 0);
            System.out.println("Result: " + result);
        } catch (ArithmeticException e) {
            System.out.println("Error: " + e.getMessage());
        } finally {
            System.out.println("This block always executes");
        }
    }

    public static int divide(int a, int b) {
        return a / b;
    }
}

Custom Exceptions

You can create your own exceptions to handle specific scenarios in your application:

class InsufficientFundsException extends Exception {
    public InsufficientFundsException(String message) {
        super(message);
    }
}

class BankAccount {
    private double balance;

    public void withdraw(double amount) throws InsufficientFundsException {
        if (amount > balance) {
            throw new InsufficientFundsException("Not enough balance");
        }
        balance -= amount;
    }
}

public class CustomExceptionExample {
    public static void main(String[] args) {
        BankAccount account = new BankAccount();
        try {
            account.withdraw(100);
        } catch (InsufficientFundsException e) {
            System.out.println("Error: " + e.getMessage());
        }
    }
}