System.out.println("This program adds two numbers. ");
        Scanner keyboard = new Scanner(System.in);

        System.out.print("First number: ");
        int number1 = keyboard.nextInt();

        System.out.print("Second number: ");
        int number2 = keyboard.nextInt();

        int result = number1 + number2;

        System.out.println(number1 + " + " + number2 + " = " + result);

        System.out.println("This program multiplies 2 numbers. ");

        System.out.print("First number: ");
        int number3 = keyboard.nextInt();

        System.out.print("Second number: ");
        int number4 = keyboard.nextInt();

        int result1 = number3 * number4;

        System.out.println(number3 + " * " + number4 +  " = " + result1);
    }
}