Assignment3p1.java

import java.util.Scanner;

public class Assignment3p1 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        try {
            System.out.print("Enter a number: ");
            double number = Double.parseDouble(scanner.nextLine());

            if (number < 0) {
                throw new IllegalArgumentException("Error: Cannot calculate the square root of a negative number.");
            }

            double squareRoot = Math.sqrt(number);
            System.out.println("Square root: " + squareRoot);
        } catch (NumberFormatException e) {
            System.out.println("Error: Invalid input. Please enter a valid number.");
        } catch (IllegalArgumentException e) {
            System.out.println(e.getMessage());
        } finally {
            scanner.close();
        }
    }
}