Java String to complete mathematical sum

Question

In java, I am currently in the process of trying to find a way to do mathematical sums by typing in text to a JTextField, putting it into a String, and converting it to an int a

Answer 1

This will do it for you.

  import javax.script.ScriptEngineManager;
    import javax.script.ScriptEngine;

    public class Test {
      public static void main(String[] args) throws Exception{
        ScriptEngineManager mgr = new ScriptEngineManager();
        ScriptEngine engine = mgr.getEngineByName("JavaScript");
        String foo = "40+2";//any mathematical operations +,-,*,/ 
        System.out.println(engine.eval(foo));
        } 
    }

Here you can put the methods describing the log/cos etc functions

String st = "10+3";
int result;
for(int i=0;i