Simple Calculator in Console

Simple Calculator In JAVA
This Program simple take values and operator of computation and give the output.

import java.util.*;

class Calculator{
public static void main(String []args){
int n1,n2,ans;   //Declaration
char op;  // Declaration

Scanner input=new Scanner(System.in);
System.out.println("Enter 1st Number ");
n1=input.nextInt();

System.out.println("Enter Operation  ");
op=input.next();

System.out.println("Enter 2nd Number ");
n2=input.nextInt();

if(op=='+')

ans=n1+n2;

else if(op=='-')

ans=n1-n2;

else if(op=='*')

ans=n1*n2;

else

ans=n1/n2;

System.out.println("Answer = "+ans);

}
}

INPUT
2
+
2

OUTPUT
4