import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.awt.Dimension;
import java.io.*;

public class odtwarzacz {
    public static void main (String[] args) {
            JFrame oknoGlowne = new JFrame("Odtwarzacz plikow MP3");
            //oknoGlowne.setLayout(new GridLayout(4, 1));
            //oknoGlowne.setSize(new Dimension(500,400));
            //oknoGlowne.setMinimumSize(new Dimension(500,400));
            //oknoGlowne.setMaximumSize(new Dimension(600,500));
            oknoGlowne.setPreferredSize(new Dimension(800, 400));
            //oknoGlowne.setResizable(false);
            oknoGlowne.pack();
            oknoGlowne.setLocationRelativeTo(null);
            oknoGlowne.setVisible(true);
            oknoGlowne.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

            JPanel panel = new JPanel((new FlowLayout()));
            panel.setSize(300, 300);
            panel.setBackground(Color.red);
            oknoGlowne.add(panel);
            panel.setLayout(new BorderLayout());

            JPanel subPanel = new JPanel();

            JButton b1 = new JButton("Przycisk PLAY");
            b1.setPreferredSize(new Dimension(150, 40));
            b1.setBackground(Color.green);
            subPanel.add(b1);
            JButton b2 = new JButton("Przycisk PAUZA");
            b2.setPreferredSize(new Dimension(150, 40));
            b2.setBackground(Color.yellow);
            subPanel.add(b2);
            JButton b3 = new JButton("Przycisk STOP");
            b3.setPreferredSize(new Dimension(150, 40));
            b3.setBackground(Color.red);
            subPanel.add(b3);
            //panel.setBackground(Color.blue);
            panel.add(subPanel, BorderLayout.SOUTH);
    }
}