Converting inserted string to a compilable expression

Question

I\'m somehow new to Java so my question can seem trivial, however i cannot find an answer to it anywhere in my books.

I want to initiatie a dialog with a user in which h

Answer 1

How to convert a String into Arithmetic Expression

import bsh.*;

 class Operation
 {

    public static void main(String[] args)throws Exception
    {
        Interpreter i=new Interpreter();
        int r=(Integer)i.eval(args[0]);
        System.out.println(r);
    }
}

for this we need a separate jar file named: bsh.jar file

need to set classpath for above jar file

source: http://ohmjavaclasses.blogspot.com/2011/11/how-to-convert-string-into-arithmetic.html