// we are doing Integer or float arithmetic
// Add | Subtract | Multiply | Divide
if (action.equals("Add")) {
var.add(varVal);
} else if (action.equals("Subtract")) {
var.subtract(varVal);
} else if (action.equals("Multiply")) {
var.multiply(varVal);
} else if (action.equals("Divide")) {
var.divide(varVal);
}