Problema JDialog

É o seguinte, eu tenho um frame que quando eu clicoem um botão ele tem que abrir um JDialog pra cadastrar autores. Eu construi a JDialog no construtor de tela do NetBeans, se eu rodar, ela roda, agora quando eu chamo ela através do botão aparece a janela, mas não aparece os elementos. O que fazer?

Coloque seu código aqui para o pessoal poder ajudar

package fronteira;

import javax.swing.ImageIcon;

/**
 *
 * @author Guirodr
 */
public class Janela extends javax.swing.JDialog {
ImageIcon im=new ImageIcon("C:/Users/Guirodr/Desktop/PENDRIVE/Originals/1.png"),im1=new ImageIcon("C:/Users/Guirodr/Desktop/PENDRIVE/Originals/2.png"),im2=new ImageIcon("C:/Users/Guirodr/Desktop/PENDRIVE/Originals/3.png"),im3=new ImageIcon("C:/Users/Guirodr/Desktop/PENDRIVE/Originals/4.png"),im4=new ImageIcon("C:/Users/Guirodr/Desktop/PENDRIVE/Originals/5.png");
    /** Creates new form NewJDialog */
    public Janela(java.awt.Frame parent, boolean modal) {
        super(parent, modal);
        initComponents();
    }

Janela() {
setBounds(100,100,100,100);
//Janela janela=new Janela();
//janela.add(jToolBar1);
//janela.setVisible(true);
    }

/** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

jRadioButton1 = new javax.swing.JRadioButton();
        jToolBar1 = new javax.swing.JToolBar();
        jButton1 = new javax.swing.JButton(im);
        jButton2 = new javax.swing.JButton(im2);
        jButton3 = new javax.swing.JButton(im3);
        jButton4 = new javax.swing.JButton(im4);
        jButton5 = new javax.swing.JButton(im1);
        jColorChooser1 = new javax.swing.JColorChooser();

jRadioButton1.setText("jRadioButton1");
        jRadioButton1.setFocusable(false);
        jRadioButton1.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
        jRadioButton1.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);

setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
        setBackground(new java.awt.Color(0, 110, 203));

jToolBar1.setFloatable(false);
        jToolBar1.setRollover(true);

jButton1.setBorder(javax.swing.BorderFactory.createBevelBorder(javax.swing.border.BevelBorder.RAISED));
        jButton1.setFocusable(false);
        jButton1.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
        jButton1.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });
        jToolBar1.add(jButton1);

jButton2.setBorder(new javax.swing.border.SoftBevelBorder(javax.swing.border.BevelBorder.RAISED));
        jButton2.setFocusable(false);
        jButton2.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
        jButton2.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });
        jToolBar1.add(jButton2);

jButton3.setBorder(javax.swing.BorderFactory.createEtchedBorder());
        jButton3.setFocusable(false);
        jButton3.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
        jButton3.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
        jToolBar1.add(jButton3);

jButton4.setBorder(javax.swing.BorderFactory.createCompoundBorder());
        jButton4.setFocusable(false);
        jButton4.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
        jButton4.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
        jToolBar1.add(jButton4);

jButton5.setFocusable(false);
        jButton5.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
        jButton5.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
        jButton5.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton5ActionPerformed(evt);
            }
        });
        jToolBar1.add(jButton5);

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(114, 114, 114)
                        .addComponent(jColorChooser1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addContainerGap()
                        .addComponent(jToolBar1, javax.swing.GroupLayout.DEFAULT_SIZE, 734, Short.MAX_VALUE)))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(5, 5, 5)
                .addComponent(jToolBar1, javax.swing.GroupLayout.PREFERRED_SIZE, 72, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jColorChooser1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(21, Short.MAX_VALUE))
        );

pack();
    }// </editor-fold>

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
    }

private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
    }

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
    }

/**
    * @param args the command line arguments
    */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                Janela dialog = new Janela(new javax.swing.JFrame(), true);
                dialog.addWindowListener(new java.awt.event.WindowAdapter() {
                    public void windowClosing(java.awt.event.WindowEvent e) {
                        System.exit(0);
                    }
                });
                dialog.setVisible(true);
            }
        });
    }

// Variables declaration - do not modify
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JButton jButton4;
    private javax.swing.JButton jButton5;
    private javax.swing.JColorChooser jColorChooser1;
    private javax.swing.JRadioButton jRadioButton1;
    private javax.swing.JToolBar jToolBar1;
    // End of variables declaration

}

você tem certeza que instanciou (usando o new) a Dialog na hora que chamou-a pelo Frame?

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