calculator

package com.company;

public class Calculator {
    private int a;
    private int b;
    private int result;
    private String type;
    private String sentence;
    private boolean is = true;

    public void setA(int a) {
        this.a = a;
    }

    public void setB(int b) {
        this.b = b;
    }

    public void add() {
        result = a + b;
        ResultManager add = new ResultManager(this.result);
    }

    public void exponentiation() {
        type = "potegowania";
        result = (int) Math.pow(a, b);
        ResultManager power = new ResultManager(this.result, type);
    }

    private boolean ifFirst(int x) {


        boolean is = true;
        for (int i = 2; i < x; i++) {
            if (x % i == 0) {

                is = false;
                return is;
            }

        }
        return is;

    }


    public void getFirstNumbers() {
        boolean c;
        int j = 0;
        for (int i = a; i <= b; i++) {
            c = ifFirst(i);
            if (c == true) {
                j++;
            } else
                continue;

        }
        String sentence = "Pomiedzy " + a + " i " + b + " jest " + j + " liczb pierwszych";
        new ResultManager(sentence);
    }
}