Calc.java

package St;

import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Properties;
import java.util.Scanner;



class num{
        String a;
        int b;
        num(String a, int b){
            this.a = a;
            this.b = b;
        }
        String print(){
            return "<" + a + ">: " + b;
        }
        public boolean equals(Object o){
            num toCheck = (num)o;
            return this.a.equals(toCheck.a);
        }
    }

    public class Calc{
        //Main functional.
        private Properties commandsNames = null;
        private Scanner scan = null;
        private Stack stack = null;
        private Parser parser = null;
        {
            FileInputStream in_d = null;
            commandsNames = new Properties();
            try {
                in_d = new FileInputStream("E:\\Proga\\Stack\\src\\St\\LoadClassesNames.properties");
                commandsNames.load(in_d);
            } catch (IOException e) {
                e.printStackTrace();
            }
            stack = new Stack();
            parser = new Parser();
        }
        String getProperty(String s) {
            return commandsNames.getProperty(s);
        }

        Calc() {
            this.scan = new Scanner(System.in);
        }
        Calc(String s) {
            this.scan = new Scanner(s);
        }

        void calculations() {
            while (scan.hasNext()) {
                String s = scan.nextLine();
                if (s.equals("EXIT")) {
                    break;
                }
                //parsing
                Scanner strings = new Scanner(s);
                ArrayList<String> ArrStr = new ArrayList<>();
                while (strings.hasNext()) {
                    String tmp = strings.next();

                    if(!tmp.contains("#"))
                        ArrStr.add(tmp);
                    else {
                        tmp = (tmp.indexOf('#') == 0) ? "#" : tmp.substring(0, tmp.indexOf('#'));
                        ArrStr.add(tmp);
                        break;
                    }

                }
                int i = 0;
                String commandName = null;
                while (i < ArrStr.size()) {
                    if (this.getProperty(ArrStr.get(i)) != null) {
                        commandName = this.getProperty(ArrStr.get(i));
                        break;
                    } else if(ArrStr.get(i).substring(0,1).equals("#")){
                        commandName ="#";
                        break;
                    }
                    i++;
                }
                ArrStr.remove((String)"#");
                if(commandName == null){
                    System.out.println("WrongCommand");
                    continue;
                }
                if (commandName.equals("#")) {
                    continue;
                }
                stack.setNumStr(ArrStr);
                //call parser
                parser.parsing(stack, commandName);
            }
        }
    }