Tak prosto ale nie działa

import javax.swing.JFrame;

public class MainWindow extends JFrame {
    JFrame frame1;
    Panels panels;
    MainWindow(){
        frame1 = new JFrame();
        frame1.setTitle("Dicco disco");
        frame1.setBounds(100,100,700,700);
        frame1.setResizable(true);
        frame1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame1.setLayout(null);
        frame1.add(new Panels());

    }
}

import javax.swing.*;
import java.awt.*;

public class Panels extends JPanel{


    Panels() {
        setBounds(100,100,200,200);
        setName("działaj");
        setForeground(Color.red);
        setVisible(true);
        }


}

import javax.swing.JFrame;

public class MainWindow extends JFrame {
    MainWindow(){
        setTitle("Dicco disco");
        setBounds(100,100,700,700);
        setResizable(true);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLayout(null);
        add(new Panels());
        setVisible(true);
    }
}

/**
 *Klasa główna programu
 */
public class Main {
    public static void main(String[] args ){
        Brett bret = new Brett();
    }

}

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

/**
 * Klasa odpowiedzialna za wprowadzanie danych i ich kontorolę
 */
public class Brett extends JFrame implements ActionListener {
    MainWindow mainWindow;
    JLabel info_l,mhight_l,Speed_l,Probability_l;
    JTextArea nwidth_t,mhight_t,Speed_t,Probability_t;
    JLabel Size_l;
    JButton Ok_b;

    int n,m,speed;
    float probability;
    Brett(){

        setTitle("Disco disco");
        setBounds(100,100,600,400);
        setResizable(true);
        setVisible(true);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLayout(null);

        info_l = new JLabel("Wpisz wszystkie potrzebne paramaetry:");
        info_l.setFont(new Font("Arial",Font.BOLD,20));
        info_l.setForeground((new Color(58,195,27)));
        info_l.setBounds(70,0,500,60);
        add(info_l);

        Size_l = new JLabel("Rozmiar: n");
        Size_l.setFont(new Font("Arial",Font.BOLD,15));
        Size_l.setBounds(60,70,100,40);
        add(Size_l);

        mhight_l = new JLabel("m:");
        mhight_l.setFont(new Font("Arial",Font.BOLD,15));
        mhight_l.setBounds(350,70,30,40);
        add(mhight_l);

        Speed_l = new JLabel("Szybkość [ms]: ");
        Speed_l.setFont(new Font("Arial",Font.BOLD,15));
        Speed_l.setBounds(60,150,150,40);
        add(Speed_l);

        Probability_l = new JLabel("Prawdopodobieństwo[0-1]: ");
        Probability_l.setFont(new Font("Arial",Font.BOLD,15));
        Probability_l.setBounds(60,230,250,40);
        add(Probability_l);

        nwidth_t = new JTextArea();
        nwidth_t.setFont(new Font("Arial",Font.BOLD,15));
        nwidth_t.setBounds(180,80,150,30);
        add(nwidth_t);

        mhight_t = new JTextArea();
        mhight_t.setFont(new Font("Arial",Font.BOLD,15));
        mhight_t.setBounds(380,80,150,30);
        add(mhight_t);

        Speed_t = new JTextArea("");
        Speed_t.setFont(new Font("Arial",Font.BOLD,15));
        Speed_t.setBounds(210,150,320,30);
        add(Speed_t);

        Probability_t = new JTextArea("");
        Probability_t.setFont(new Font("Arial",Font.BOLD,15));
        Probability_t.setBounds(310,230,220,30);
        add(Probability_t);

        Ok_b = new JButton("OK");
        Ok_b.setFont(new Font("Arial",Font.BOLD,15));
        Ok_b.setBounds(60,280,470,30);
        add(Ok_b);
        Ok_b.addActionListener(this);



    }

    /**
     * Obsługa wyjątków i kontrola błędów
     * @param event
     */
    @Override
    public void actionPerformed(ActionEvent event) {
        if(event.getSource() == Ok_b){

            boolean temp = true;
            try {
                n = Integer.parseInt(nwidth_t.getText());
                if(n < 10){
                    JOptionPane.showMessageDialog(null,"Podano nieprawidłową daną: n", "Error",JOptionPane.ERROR_MESSAGE);
                    temp = false;
                }
            }catch (NumberFormatException ex) {
                JOptionPane.showMessageDialog(null,"Podano nieprawidłową daną: n", "Error",JOptionPane.ERROR_MESSAGE);
                temp = false;
            }
            try {
                m = Integer.parseInt(mhight_t.getText());
                if(m <11){
                    JOptionPane.showMessageDialog(null,"Podano nieprawidłową daną: m", "Error",JOptionPane.ERROR_MESSAGE);
                    temp = false;
                };
            }catch (NumberFormatException ex) {
                JOptionPane.showMessageDialog(null,"Podano nieprawidłową daną: m", "Error",JOptionPane.ERROR_MESSAGE);
                temp = false;
            }
            try {
                probability = Float.parseFloat(Probability_t.getText());
                if(probability<0 || probability >1  ){
                    JOptionPane.showMessageDialog(null,"Podano nieprawidłową daną: probability", "Error",JOptionPane.ERROR_MESSAGE);
                    temp = false;
                }
            }catch (NumberFormatException ex) {
                JOptionPane.showMessageDialog(null,"Podano nieprawidłową daną: probability", "Error",JOptionPane.ERROR_MESSAGE);
                temp = false;
            }
            try {
                speed = Integer.parseInt(Speed_t.getText());
                if(speed < 0){temp = false;}
            }catch (NumberFormatException ex) {
                System.out.println(Speed_t.getText());
                JOptionPane.showMessageDialog(null,"Podano nieprawidłową daną: speed", "Error",JOptionPane.ERROR_MESSAGE);
                temp = false;
            }

            if(temp == true){
                mainWindow = new MainWindow();

            }

        }

    }
}

import javax.swing.JFrame;

/**
 * Okno w którym będzie przebiegać symulacja
 */

public class MainWindow extends JFrame {

   Panels panels= new Panels();

    MainWindow(){
       setTitle("Disco disco");
        setBounds(200,0,700,700);
        setResizable(true);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLayout(null);
        setVisible(true);
        add(panels);

    }
}

import javax.swing.*;
import java.awt.*;
import java.util.ArrayList;
import java.util.Random;

public class Panels extends JPanel{


    Panels() {
        setBounds(100,100,200,200);
        setName("działaj");
        setForeground(Color.red);
        setVisible(true);
        setLayout(null);
        JButton ok = new JButton("ok");
        ok.setBounds(10,10,30,30);
        add(ok);

        }


}

       //setForeground(Color.red);
        setBackground(Color.pink);