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("Okno glowne programu");
        oknoGlowne.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        oknoGlowne.setPreferredSize(new Dimension(600, 400));
        oknoGlowne.setResizable(false);
        oknoGlowne.setVisible(true);
        oknoGlowne.pack();
        /*GridBagConstraints layout = new GridBagConstraints();
        layout.insets = new Insets(0,0,0,0);
        layout.gridx = 0;
        layout.gridy = 0;*/
        GridBagConstraints c = new GridBagConstraints();
        oknoGlowne.setLayout(new GridLayout(2, 1));

        JPanel gorny = new JPanel(new GridBagLayout());
        gorny.setBackground(Color.green);
        gorny.setPreferredSize(new Dimension(600, 150));
        oknoGlowne.add(gorny);


        JPanel panel = new JPanel(new GridBagLayout());
        //panel.setPreferredSize(new Dimension(600, 100));
        JButton b1 = new JButton("Przycisk PLAY");
        JButton b2 = new JButton("Przycisk PAUZA");
        JButton b3 = new JButton("Przycisk STOP");
        GridBagConstraints layout = new GridBagConstraints();
        layout.insets = new Insets(0, 10, 5, 0);
        layout.anchor = GridBagConstraints.SOUTH;
        layout.weighty = 1;
        //b1.setBorder(javax.swing.BorderFactory.createLineBorder(Color.BLUE, 1));
        panel.add(b1, layout);
        panel.add(b2, layout);
        panel.add(b3, layout);
        oknoGlowne.add(panel);
        panel.setBackground(Color.blue);
        b1.setBackground(Color.green);
        //b1.setPreferredSize(new Dimension(140, 30));
        b2.setBackground(Color.yellow);
        b2.setVisible(false);
        b3.setBackground(Color.red);
        //b1.setVisible(false);


        b1.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e)
            {
                //Execute when button is pressed
                b1.setVisible(false);
                b2.setVisible(true);
                System.out.println("Nacisnales play");
            }
        });

        b2.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e)
            {
                //Execute when button is pressed
                b1.setVisible(true);
                b2.setVisible(false);
                System.out.println("nacisnales pauza");
            }
        });

        b3.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e)
            {
                //Execute when button is pressed
                b1.setVisible(true);
                b2.setVisible(false);
                System.out.println("nacisnales stop");
            }
        });
    }
}