GUI not displaying upon init

Question

slightly newbie question I think:
I've written a small application (swing) which compiles fine. Upon running, the window that appears is blank. clicking anywhere on the title bar or in the window itself does nothing. However, resizing the window causes the GUI to appear and things function normaly after that. What am I missing here? I don't think i've ever had this happen before...
thanks

Answer 1

here it is:
import javax.swing.*;
import java.awt.*;
* @author  dsmolin
public class Wizard2 extends javax.swing.JFrame {
    public Wizard2() {
        init();
        repaint();
    private void init() {
        this.setLayout(null);
          this.setVisible(true);
          this.setSize(400, 400);
        this.setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
          //this.add(jPanel1);
          this.add(CARDS);
          this.add(jPanel2);
          this.setTitle("title");
          getRootPane().setDefaultButton(NEXTBUTTON);
          CARDS.add(jPanel1, P0);
          CARDS.add(Q1);
          CARDS.add(Q2);
          CARDS.add(Q3);
          CARDS.add(Q4);
          CARDS.add(PP);
          CARDS.setLayout(null);
          CARDS.setVisible(true);
          CARDS.setBounds(0, 0, 390, 280);
        jPanel1.setLayout(null);
          jPanel1.add(jScrollPane1);
        jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder(javax.swing.BorderFactory.createTitledBorder("Select Module")));
        jPanel1.add(jTextArea1);
        jPanel1.setBounds(0, 0, 390, 280);
          Q1.setBounds(0, 0, 390, 280);
          Q2.setBounds(0, 0, 390, 280);
          Q3.setBounds(0, 0, 390, 280);
          Q4.setBounds(0, 0, 390, 280);
          PP.setBounds(0, 0, 390, 280);
          Q1.setVisible(false);
          Q2.setVisible(false);
          Q3.setVisible(false);
          Q4.setVisible(false);
          PP.setVisible(false);
          jPanel2.setBorder(javax.swing.BorderFactory.createTitledBorder(javax.swing.BorderFactory.createTitledBorder("text")));
          jPanel2.setLayout(null);
          jPanel2.add(EXITBUTTON);
          jPanel2.add(NEXTBUTTON);
          jPanel2.add(BACKBUTTON);
          jPanel2.setBounds(0, 280, 390, 50);
        //jPanel2.setBorder(javax.swing.BorderFactory.createEtchedBorder());
        jList1.setModel(new javax.swing.AbstractListModel()
            String[] strings = { "Vitamin A Calculator", "Drink Formulator", "Pearson Square", "Milk & Mix formulator" };
            public int getSize() { return strings.length; }
            public Object getElementAt(int i) { return strings; }
jList1.addListSelectionListener(new javax.swing.event.ListSelectionListener()
public void valueChanged(javax.swing.event.ListSelectionEvent evt) {
jList1ValueChanged(evt);
jScrollPane1.setViewportView(jList1);
jScrollPane1.setBounds(10, 20, 110, 250);
jTextArea1.setBackground(new java.awt.Color(212, 208, 200));
jTextArea1.setText("Please select a Module and press Next.");
jTextArea1.setBorder(null);
jTextArea1.setBounds(130, 84, 250, 110);
          jTextArea1.setLineWrap(true);
          jTextArea1.setFont(new JTextField().getFont());
          EXITBUTTON.setBounds(330, 12, 50, 30);
EXITBUTTON.setText("Cancel");
EXITBUTTON.setBorder(javax.swing.BorderFactory.createEtchedBorder());
EXITBUTTON.addActionListener(Action);
          NEXTBUTTON.setBounds(240, 12, 50, 30);
NEXTBUTTON.setText("Next >");
NEXTBUTTON.setBorder(javax.swing.BorderFactory.createEtchedBorder());
NEXTBUTTON.setEnabled(false);
NEXTBUTTON.addActionListener(Action);
          BACKBUTTON.setBounds(180, 12, 50, 30);
BACKBUTTON.setText("< Back");
BACKBUTTON.setBorder(javax.swing.BorderFactory.createEtchedBorder());
BACKBUTTON.setEnabled(false);
BACKBUTTON.addActionListener(Action);
          QPanel[] PANES = {Q1, Q2, Q3, Q4};
          for(int i=0; i<4; i++)
               //PANES[i].jTextArea1.addActionListener(Action);
     int CurrentCard = 0;
     private QPanel Q1 = new QPanel();
     private QPanel Q2 = new QPanel("Step 2: Weight","Weight per Gallon: ","info: please enter the Weight per Gallon of the new Mix. For example, Enter 9.32");
     private QPanel Q3 = new QPanel("Step 3: Butterfat Test","Butterfat Test of Standard: ","info: please enter the Butterfat Test of Standard being compared. For example, Enter 10.00");
     private QPanel Q4 = new QPanel("Step 4: Vitamin A","Vitamin A Concentration: ","info: please enter the Concentration of Vitamin A being used in I.U's per ml. Please do not use commas. For example, Enter 12000");
     private VitaminAProofPanel PP = new VitaminAProofPanel();
     private JButton EXITBUTTON = new JButton();
private JButton NEXTBUTTON = new JButton();
private JButton BACKBUTTON = new JButton();
private JList jList1 = new JList();
private JPanel jPanel1 = new JPanel();
private JPanel jPanel2 = new JPanel();
     private QPanel[] PANES;// = new JPanel[5];
private JScrollPane jScrollPane1 = new JScrollPane();
private JTextArea jTextArea1 = new JTextArea();
     JPanel CARDS = new JPanel();
     String P1 = new String("1");
     String P2 = new String("2");
     String P3 = new String("3");
     String P4 = new String("4");
     String P0 = new String("0");
     public SymAction Action = new SymAction();
     double D1;
     double D2;
     double D3;
     double D4;
     public class SymAction implements java.awt.event.ActionListener
          public void actionPerformed(java.awt.event.ActionEvent event)
               Object object = event.getSource();
               if (object == EXITBUTTON)
                         System.exit(1);
               if (object == BACKBUTTON)
               if (object == NEXTBUTTON)
private void jList1ValueChanged(javax.swing.event.ListSelectionEvent evt) {
          // if something is selected, make next enabled, else, make next disabled.
          NEXTBUTTON.setEnabled(true);
public static void main(String args[]) {
          try
     //UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
                    //UIManager.setLookAndFeel("com.sun.java.swing.plaf.gtk.GTKLookAndFeel");
                    //UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
                    UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
                    //UIManager.setLookAndFeel("com.sun.java.swing.plaf.motif.MotifLookAndFeel");
     } catch (Exception e) { }
new Wizard2();