Add two number in String format in JAVA - using Script Engine

Script.java

import javax.script.ScriptEngineManager;
import javax.script.ScriptEngine;
import java.util.Scanner;

class Script{  
  public static void main(String args[])throws IOException
  {
    Scanner me = new Scanner(System.in);
    System.out.println("Enter 2 numbers:");
    String numOne = me.nextLine();
    String numTwo = me.nextLine();
    try{
      ScriptEngine js = new ScriptEngineManager().getEngineByName("javascript");
      String expression =numOne+"+"+numTwo;
      System.out.println(js.eval(expression));
    } catch (Exception e) {
                e.printStackTrace();
    
      }
  }
}