Core java Selenium Software Testing
import java.io.*; public class Assign1 { public void calc() throws IOException { BufferedReader brr=new BufferedReader(new InputStreamReader(System.in)); System.out.println("Enter operator"); String o=brr.readLine().trim(); System.out.println("Enter value of a"); // String a=brr.readLine(); int a1=Integer.parseInt(brr.readLine().trim()); System.out.println("Enter value of b"); // String b=brr.readLine(); int b1=Integer.parseInt(brr.readLine().trim()); int res = 0; if(o.equals("+")) { res = a1+b1; } else if(o.equals("-")) { res = a1-b1; } System.out.println(res); } public static void main(String[] args) throws IOException { Assign1 add=new Assign1(); add.calc(); } }