Simple Calculator using Buffered Reader

Problem:

Write a program that mimics a calculator. The program should take as input two integers and the operation to be performed. It should then output the number, the operator and the result. (For division, if the denominator is 0, output an appropriate message.)

Sample Output:

import java.io.*; public class n6 { public static BufferedReader q=new BufferedReader (new InputStreamReader (System.in)); public static void main (String []args)throws IOException{ System.out.print("Enter 1st number: "); String num1=q.readLine(); int n1=Integer.parseInt(num1); System.out.print("Enter operation: "); String op=q.readLine(); char o=op.charAt(0); System.out.print("Enter 2nd number: "); String num2=q.readLine(); int n2=Integer.parseInt(num2); if (n2==0 && o=='/') { System.out.println("Error"); } else if(o == '+') { int sum=0; sum=n1+n2; System.out.println("The sum is " +sum); } else if(o == '-') { int diff=0; diff=n1-n2; System.out.println("The difference is " +diff); } else if(o == '*') { int prod=0; prod=n1*n2; System.out.println("The product is " +prod); } else if(o == '/') { double quo=0; quo=n1/n2; System.out.println("The quotient is " +quo); } else { System.out.println("Invalid"); } } }