I have this code
Code:
 
	import java.util.Scanner;
public class Calculator {

	public static void main(String[] args) {
		
	      Scanner scan = new Scanner(System.in) ;
	      System.out.println("Enter your two numbers and the operation with spaces between e.g 8 9 -");
	      
	      String calculation=scan.nextLine();
	      
	      String [] parts = calculation.split("
...