Calculator by java programming language

 import java.util.Scanner;
public class Calculator{
    public static void main(String args[]){
        Scanner input = new Scanner(System.in);
        char opr;
        float a,b;
        System.out.println("input the value\t");
        a = input.nextFloat();
        opr = input.next().charAt(0);
        b = input.nextFloat();
        if(opr=='+')
        {
            System.out.print(a+b);
        }
        else if(opr=='-')
        {
            System.out.print(a-b);
        }
        else if(opr=='*')
        {
            System.out.print(a*b);
        }
        else if(opr=='/')
        {
            System.out.print(a/b);
        }
        else{
            System.out.println("error occurred");
        }
        
        
            
        
        
    }
}