calculator using java scanner class

dynamic calculator using java scanner class

import java.util.Scanner; public class Cal{ void add(int i,int j){ System.out.println(i+j); } void sub(int i,int j){ System.out.println(i-j); } void mul(int i,int j){ System.out.println(i*j); } void div(int i,int j){ System.out.println(i/j); } public static void main(String h[]){ Scanner s=new Scanner(System.in); Cal c=new Cal(); //menu details here String text=""; do{ System.out.println("press 1 for add"); System.out.println("press 2 for sub"); System.out.println("press 3 for mul"); System.out.println("press 4 for div"); System.out.println("Enter your choice :"); int choice=s.nextInt(); int i,j; switch(choice){ case 1: System.out.println("1 st number for add"); i=s.nextInt(); System.out.println("2 nd number for add"); j=s.nextInt(); c.add(i,j); break; case 2: System.out.println("1 st number for sub"); i=s.nextInt(); System.out.println("2 nd number for sub"); j=s.nextInt(); c.sub(i,j); break; case 3: System.out.println("1 st number for mul"); i=s.nextInt(); System.out.println("2 nd number for mul"); j=s.nextInt(); c.mul(i,j); break; case 4: System.out.println("1 st number for div"); i=s.nextInt(); System.out.println("2 nd number for div"); j=s.nextInt(); c.div(i,j); break; default :System.out.println("wrong choice"); } System.out.println("Do u want to conticue ? y/n"); text=s.next(); }while(text.equalsIgnoreCase("y")); } }