Java Program using Menu Driven criteria develop a Calculator

import java.io.*;
import java.util.*;
public class Calculator{
    public static void main(String[] args)throws IOException{
        double a,b,res=0;
        int choice,ch;
        Scanner scan=new Scanner(System.in);
        do{
            System.out.println("MENU");
            System.out.println("Enter 1 for Addition.");
            System.out.println("Enter 2 for Substraction.");
            System.out.println("Enter 3 for Multiplication.");
            System.out.println("Enter 4 for Division.");
            System.out.println("Enter your choice: ");
            choice=scan.nextInt();
            System.out.println("Enter two numbers: ");
            a=scan.nextDouble();
            b=scan.nextDouble();
            switch(choice){
                case 1: res=a+b; System.out.println("Result: "+res);break;
                case 2: res=a-b; System.out.println("Result: "+res);break;
                case 3: res=a*b; System.out.println("Result: "+res);break;
                case 4: res=a/b; System.out.println("Result: "+res); double rem=a%b; System.out.println("Remainder: "+rem);break;
                default: System.out.println("Wrong choice.");
            }
            System.out.println("Enter 0 to exit: ");
            ch=scan.nextInt();
        }
        while(ch!=0);
        if(ch==0){
            System.out.println("You have choose to exit.");
            System.out.println("Thank You.");
        }
    }
}