;import java.util.
Scanner
                  { public class SimpleCalculator
        { public static void main(String[] args)
  ;Scanner input = new Scanner(System.in)
    ;System.out.print("Enter first number: ")
  ;)(double firstNumber = input.nextDouble
 ;System.out.print("Enter second number: ")
;)(double secondNumber = input.nextDouble
 ;System.out.println("Select an operation:")
               ;System.out.println("1. Add")
          ;System.out.println("2. Subtract")
           ;System.out.println("3. Multiply")
             ;System.out.println("4. Divide")
             ;)(int operation = input.nextInt
                               ;double result
                         { switch (operation)
                                    :case 1
 ;result = firstNumber + secondNumber
 ;System.out.println("Result: " + result)
                                  ;break
                                    :case 2
 ;result = firstNumber - secondNumber
 ;System.out.println("Result: " + result)
                                                ;break
                                                  :case 3
               ;result = firstNumber * secondNumber
               ;System.out.println("Result: " + result)
                                                ;break
                                                  :case 4
                             { if (secondNumber != 0)
             ;result = firstNumber / secondNumber
            ;System.out.println("Result: " + result)
                                                { else }
;System.out.println("Error: Cannot divide by zero.")
                                                       }
                                                ;break
                                                 :default
    ;System.out.println("Invalid operation selected.")
                                                ;break
                                              ;)(input.close
                                                                }
                                                                    }