How to convert symbols like "+,-,*,/" from String to int

Question

Now i'm working with android studio and I cant to convert symbols like "+,-,*,/" from Strimg to int.It's possible or not?
p.s:I'm doing calculator.
For example i have a string:String a =23 + 34 * 43 / 23; and i need to parse it to int.

Answer 1

those symbols cannot be converted to integers. you can look at algorithms on how to evaluate an expression or use a built in library if one exists