Ajuda com janelas

import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.ImageIcon;
import javax.swing.JRadioButton;
import java.awt.Color;
import javax.swing.JSpinner;
import javax.swing.SpinnerNumberModel;
import java.awt.Toolkit;
import java.util.Random;

import javax.swing.ButtonGroup;
import javax.swing.JCheckBox;
import javax.swing.JList;
import javax.swing.JScrollBar;
import javax.swing.JScrollPane;


public class Janela extends JFrame {

	private JPanel contentPane;
	private JTextField textField;
	private JTextField textField_1;
	protected int quantidadeDeLados;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					Janela frame = new Janela();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public Janela() {
		setIconImage(Toolkit.getDefaultToolkit().getImage("C:\\Users\\baujava\\workspace\\RollTheDice\\Dados\\Logo].jpg"));
		setTitle("Rolador De Dados");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 416, 395);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JLabel lblNomeDoJogador = new JLabel("Nome Do Jogador");
		lblNomeDoJogador.setBounds(10, 11, 123, 14);
		contentPane.add(lblNomeDoJogador);
		
		textField = new JTextField();
		textField.setBounds(107, 8, 137, 20);
		contentPane.add(textField);
		textField.setColumns(10);
		
		
		JButton btnRolarDados = new JButton("Rolar Dados");
		btnRolarDados.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				
				Jogador jogador = new Jogador();
				jogador.rolarDados(quantidadeDeLados, quantidadeDeLados);
				return;
				
			}
			
		});
		btnRolarDados.setBounds(10, 319, 107, 23);
		contentPane.add(btnRolarDados);
		
		JLabel lblAo = new JLabel("A\u00E7\u00E3o");
		lblAo.setBounds(10, 36, 81, 14);
		contentPane.add(lblAo);
		
		textField_1 = new JTextField();
		textField_1.setBounds(102, 33, 86, 20);
		contentPane.add(textField_1);
		textField_1.setColumns(10);
		
		JLabel lblDificuldade = new JLabel("Dificuldade");
		lblDificuldade.setBounds(10, 61, 81, 14);
		contentPane.add(lblDificuldade);
		
		JButton btnNewButton = new JButton("");
		btnNewButton.setBackground(new Color(240, 240, 240));
		btnNewButton.setIcon(new ImageIcon("C:\\Users\\baujava\\workspace\\RollTheDice\\Dados\\D4.jpg"));
		btnNewButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
			}
		});
		btnNewButton.setBounds(10, 86, 74, 62);
		contentPane.add(btnNewButton);
		
		JButton btnNewButton_1 = new JButton("");
		btnNewButton_1.setIcon(new ImageIcon("C:\\Users\\baujava\\workspace\\RollTheDice\\Dados\\D6.jpg"));
		btnNewButton_1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
			}
		});
		btnNewButton_1.setBounds(136, 94, 52, 54);
		contentPane.add(btnNewButton_1);
		
		JButton btnNewButton_2 = new JButton("");
		btnNewButton_2.setIcon(new ImageIcon("C:\\Users\\baujava\\workspace\\RollTheDice\\Dados\\D8.jpg"));
		btnNewButton_2.setBounds(218, 86, 66, 62);
		contentPane.add(btnNewButton_2);
		
		JButton btnNewButton_3 = new JButton("");
		btnNewButton_3.setIcon(new ImageIcon("C:\\Users\\baujava\\workspace\\RollTheDice\\Dados\\D10.jpg"));
		btnNewButton_3.setBounds(314, 86, 81, 62);
		contentPane.add(btnNewButton_3);
		
		JSpinner spinner = new JSpinner();
		spinner.setModel(new SpinnerNumberModel(6, 1, 10, 1));
		spinner.setBounds(104, 58, 39, 20);
		contentPane.add(spinner);
		
		JRadioButton radioButton = new JRadioButton("");
		radioButton.setBounds(35, 151, 21, 25);
		contentPane.add(radioButton);	
		
		JButton btnLimparLista = new JButton("Limpar Lista");
		btnLimparLista.setBounds(272, 318, 116, 25);
		contentPane.add(btnLimparLista);
		
		JLabel lblQuantidade = new JLabel("Quantidade");
		lblQuantidade.setBounds(177, 60, 81, 16);
		contentPane.add(lblQuantidade);
		
		JSpinner spinner_1 = new JSpinner();
		spinner_1.setModel(new SpinnerNumberModel(1, 1, 10, 1));
		spinner_1.setBounds(250, 59, 34, 20);
		contentPane.add(spinner_1);
		
		JRadioButton radioButton_1 = new JRadioButton("");
		radioButton_1.setBounds(146, 151, 21, 25);
		contentPane.add(radioButton_1);
		
		JRadioButton radioButton_2 = new JRadioButton("");
		radioButton_2.setBounds(237, 151, 21, 25);
		contentPane.add(radioButton_2);
		
		JRadioButton radioButton_3 = new JRadioButton("");
		radioButton_3.setBounds(344, 151, 21, 25);
		contentPane.add(radioButton_3);
		
		
		ButtonGroup group = new ButtonGroup();
	    group.add(radioButton);
	    group.add(radioButton_1);
	    group.add(radioButton_2);
	    group.add(radioButton_3);
	    
		JScrollPane scrollPane = new JScrollPane();
		scrollPane.setBounds(10, 178, 378, 135);
		contentPane.add(scrollPane);
		
		JList list = new JList();
		scrollPane.setViewportView(list);
	}
}

import java.util.Random;


public class Jogador {
	public String nome;
	public String acao;
	public byte quantidadeDeDados;
	public byte dificuldade;
	public int [] rolarDados (int quantidade, int quantidadeDeLados){ 
		int resultado[] = new int [quantidade];
		Random rnd = new Random();
			for (int i = 0; i< quantidade; i++){
				resultado[i] = rnd.nextInt(quantidadeDeLados -1) +1;
			}
			return resultado;
	}
	
	
	public byte inserirDados(){
		return 0;
	}
	int [][] matriz;
	public int d4 = 4;
	public int d6 = 6;
	public int d8 = 8;
	public int d10 = 10;
	
}

public class Main extends Jogador {
	public int qtdeSucessos;
	public int geraQtdeSucessos(){
		return 0;
	}
	public int geraNmroDados(){
		return 0;
	}
	
}