PW_Swing_#1

////////////////////////////MAIN///////////////

package com.cieslin;

public class Main {

    public static void main(String[] args) {
        MainWindow mainWindow = new MainWindow();
    }
}

////////////////////MyPanel//////////////////////////
package com.cieslin;

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

public class MyPanel extends JPanel implements ActionListener{

    private JButton clear;
    private JTextField text;
    private final String password = "5431";
    private String userPassword = "";
    private Rectangle rect;
    private String passwordText;

    private ArrayList<JButton> buttons;

    MyPanel() {
        this.setLayout(null);
        passwordText = new String("");
        rect = new Rectangle();
        rect.setBounds(600, 500, 640, 600);
        buttons = new ArrayList<>();
        buttons.add(new JButton("0"));
        buttons.get(0).setBounds(220, 500, 170, 50);
        buttons.get(0).addActionListener(this);
        this.add(buttons.get(0));
        int x = 220;
        int y = 440;
        for(int i = 1; i < 10; i++) {
            buttons.add(new JButton(String.valueOf(i)));
            buttons.get(i).setBounds(x, y, 50, 50);
            if(i % 3 == 0)
            {
                x = 160;
                y -= 60;
            }
            x += 60;
            this.add(buttons.get(i));
            buttons.get(i).addActionListener(this);
        }

        clear = new JButton("Czysc");
        text = new JTextField("Wprowadz kod...");
        text.setEditable(false);
        text.setBounds(220, 10, 200, 50);
        clear.setBounds(110, 70, 400, 50);
        clear.addActionListener((ActionEvent e) -> {
            text.setText("Wprowadz kod...");
            passwordText = "";
        });
        this.add(text);
        this.add(clear);
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        if((buttons.get(Integer.parseInt(e.getActionCommand()))).getText() != null){
            userPassword += (buttons.get(Integer.parseInt(e.getActionCommand()))).getText();
            passwordText += "*";
            if (userPassword.equals(password)){
                text.setText("WYGRALES!");
                return;
            }
        }
        text.setText(passwordText);
    }
}

///////////////////MainWindow/////////////////////////

package com.cieslin;

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

public class MainWindow {
    private JFrame mainWindow;
    private Rectangle rect;

    MainWindow(){
        rect = new Rectangle();
        rect.setBounds(600, 500, 640, 600);
        mainWindow = new JFrame();
        mainWindow.setBounds(rect);
        mainWindow.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        mainWindow.setLayout(null);
        mainWindow.setResizable(false);
        mainWindow.setContentPane(new MyPanel());
        mainWindow.setVisible(true);
    }

}