what's wrong with my jtree code ?

[Nakata kokuyo]

hi, good day , i have problem on display Jtree in my application, below is my sample code

 
 
import javax.swing.tree.DefaultMutableTreeNode;
 
public class NewJPanel extends javax.swing.JPanel {
    
    /** Creates new form NewJPanel */
    public NewJPanel() {
        initComponents();
    }
    
     private class BookInfo {
        public String bookName;
        public URL bookURL;
 
        public BookInfo(String book, String filename) {
            bookName = book;
            bookURL = TreeDemo.class.getResource(filename);
            if (bookURL == null) {
                System.err.println("Couldn't find file: "
                                   + filename);
            }
        }
    
    
     private void createNodes(DefaultMutableTreeNode top) {
        DefaultMutableTreeNode category = null;
        DefaultMutableTreeNode book = null;
 
        category = new DefaultMutableTreeNode("Books for Java Programmers");
        top.add(category);
 
        //original Tutorial
        book = new DefaultMutableTreeNode(new BookInfo
            ("The Java Tutorial: A Short Course on the Basics",
            "tutorial.html"));
        category.add(book);
 
        //Tutorial Continued
        book = new DefaultMutableTreeNode(new BookInfo
            ("The Java Tutorial Continued: The Rest of the JDK",
            "tutorialcont.html"));
        category.add(book);
 
        //JFC Swing Tutorial
        book = new DefaultMutableTreeNode(new BookInfo
            ("The JFC Swing Tutorial: A Guide to Constructing GUIs",
            "swingtutorial.html"));
        category.add(book);
 
        //Bloch
        book = new DefaultMutableTreeNode(new BookInfo
            ("Effective Java Programming Language Guide",
     "bloch.html"));
        category.add(book);
 
        //Arnold/Gosling
        book = new DefaultMutableTreeNode(new BookInfo
            ("The Java Programming Language", "arnold.html"));
        category.add(book);
 
        //Chan
        book = new DefaultMutableTreeNode(new BookInfo
            ("The Java Developers Almanac",
             "chan.html"));
        category.add(book);
 
        category = new DefaultMutableTreeNode("Books for Java Implementers");
        top.add(category);
 
        //VM
        book = new DefaultMutableTreeNode(new BookInfo
            ("The Java Virtual Machine Specification",
             "vm.html"));
        category.add(book);
 
        //Language Spec
        book = new DefaultMutableTreeNode(new BookInfo
            ("The Java Language Specification",
             "jls.html"));
        category.add(book);
    }
    
    
    private void initComponents() {
        buttonGroup1 = new javax.swing.ButtonGroup();
        jTabbedPane1 = new javax.swing.JTabbedPane();
        Dict_tabmainpanel = new javax.swing.JPanel();
        Dict_up_panel = new javax.swing.JPanel();
        Dict_dictinarybtn = new javax.swing.JButton();
        Dict_definitionbtn = new javax.swing.JButton();
        Dict_wordbtn = new javax.swing.JButton();
        Dict_content_panel = new javax.swing.JPanel();
        Dict_search_border_panel = new javax.swing.JPanel();
        jCheckBox1 = new javax.swing.JCheckBox();
        jCheckBox2 = new javax.swing.JCheckBox();
        jCheckBox3 = new javax.swing.JCheckBox();
        jCheckBox4 = new javax.swing.JCheckBox();
        jCheckBox5 = new javax.swing.JCheckBox();
        jCheckBox6 = new javax.swing.JCheckBox();
        jCheckBox7 = new javax.swing.JCheckBox();
        jCheckBox8 = new javax.swing.JCheckBox();
        jCheckBox9 = new javax.swing.JCheckBox();
        jCheckBox10 = new javax.swing.JCheckBox();
        Dict_tree_border_panel = new javax.swing.JPanel();
        DefaultMutableTreeNode top =
        new DefaultMutableTreeNode("The Java Series");
 
        createNodes(top);
 
        jTree1 = new javax.swing.JTree(top);
        jScrollPane1 = new javax.swing.JScrollPane();
        jPanel1 = new javax.swing.JPanel();
        jTree2 = new javax.swing.JTree(top);
 
        setLayout(new java.awt.BorderLayout());
 
        Dict_tabmainpanel.setLayout(new java.awt.BorderLayout());
 
        Dict_dictinarybtn.setText("Dictionary");
        Dict_dictinarybtn.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                Dict_dictinarybtnActionPerformed(evt);
            }
        });
 
        Dict_up_panel.add(Dict_dictinarybtn);
 
        Dict_definitionbtn.setText("Definition");
        Dict_up_panel.add(Dict_definitionbtn);
 
        Dict_wordbtn.setText("Words");
        Dict_up_panel.add(Dict_wordbtn);
 
        Dict_tabmainpanel.add(Dict_up_panel, java.awt.BorderLayout.NORTH);
 
        Dict_content_panel.setLayout(new java.awt.FlowLayout(java.awt.FlowLayout.LEFT));
 
        Dict_search_border_panel.setLayout(new javax.swing.BoxLayout(Dict_search_border_panel, javax.swing.BoxLayout.Y_AXIS));
 
        Dict_search_border_panel.setBorder(new javax.swing.border.TitledBorder("Search For :"));
        jCheckBox1.setText("Synonyms");
        jCheckBox1.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
        jCheckBox1.setMargin(new java.awt.Insets(2, 0, 2, 2));
        jCheckBox1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jCheckBox1ActionPerformed(evt);
            }
        });
 
        Dict_search_border_panel.add(jCheckBox1);
 
        jCheckBox2.setText("Antonyms");
        jCheckBox2.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
        jCheckBox2.setMargin(new java.awt.Insets(2, 0, 2, 2));
        Dict_search_border_panel.add(jCheckBox2);
 
        jCheckBox3.setText("Similar item");
        jCheckBox3.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
        jCheckBox3.setMargin(new java.awt.Insets(2, 0, 2, 2));
        Dict_search_border_panel.add(jCheckBox3);
 
        jCheckBox4.setText("Hypernyms ( .. is a type of)");
        jCheckBox4.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
        jCheckBox4.setMargin(new java.awt.Insets(2, 0, 2, 2));
        Dict_search_border_panel.add(jCheckBox4);
 
        jCheckBox5.setText("Hyponyms (type of)");
        jCheckBox5.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
        jCheckBox5.setMargin(new java.awt.Insets(2, 0, 2, 2));
        Dict_search_border_panel.add(jCheckBox5);
 
        jCheckBox6.setText("Coordinate items (same hypernyms)");
        jCheckBox6.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
        jCheckBox6.setMargin(new java.awt.Insets(2, 0, 2, 2));
        Dict_search_border_panel.add(jCheckBox6);
 
        jCheckBox7.setText("Halonym (is part of)");
        jCheckBox7.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
        jCheckBox7.setMargin(new java.awt.Insets(2, 0, 2, 2));
        Dict_search_border_panel.add(jCheckBox7);
 
        jCheckBox8.setText("Meronyms (part of)");
        jCheckBox8.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
        jCheckBox8.setMargin(new java.awt.Insets(2, 0, 2, 2));
        Dict_search_border_panel.add(jCheckBox8);
 
        jCheckBox9.setText("Members (same halonym)");
        jCheckBox9.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
        jCheckBox9.setMargin(new java.awt.Insets(2, 0, 2, 2));
        Dict_search_border_panel.add(jCheckBox9);
 
        jCheckBox10.setText("Attributes");
        jCheckBox10.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
        jCheckBox10.setMargin(new java.awt.Insets(2, 0, 2, 2));
        Dict_search_border_panel.add(jCheckBox10);
 
        Dict_content_panel.add(Dict_search_border_panel);
        Dict_search_border_panel.getAccessibleContext().setAccessibleName(":: Search For ::");
 
        Dict_tree_border_panel.setPreferredSize(new java.awt.Dimension(5, 10));
        jTree1.setRootVisible(true);
        Dict_tree_border_panel.add(jTree1);
 
        jPanel1.add(jTree2);
 
        jScrollPane1.setViewportView(jPanel1);
 
        Dict_tree_border_panel.add(jScrollPane1);
 
        Dict_content_panel.add(Dict_tree_border_panel);
 
        Dict_tabmainpanel.add(Dict_content_panel, java.awt.BorderLayout.CENTER);
 
        jTabbedPane1.addTab("tab1", Dict_tabmainpanel);
 
        add(jTabbedPane1, java.awt.BorderLayout.CENTER);
 
    }
   
             
 
                                         
    
    
    private javax.swing.JPanel Dict_content_panel;
    private javax.swing.JButton Dict_definitionbtn;
    private javax.swing.JButton Dict_dictinarybtn;
    private javax.swing.JPanel Dict_search_border_panel;
    private javax.swing.JPanel Dict_tabmainpanel;
    private javax.swing.JPanel Dict_tree_border_panel;
    private javax.swing.JPanel Dict_up_panel;
    private javax.swing.JButton Dict_wordbtn;
    private javax.swing.ButtonGroup buttonGroup1;
    private javax.swing.JCheckBox jCheckBox1;
    private javax.swing.JCheckBox jCheckBox10;
    private javax.swing.JCheckBox jCheckBox2;
    private javax.swing.JCheckBox jCheckBox3;
    private javax.swing.JCheckBox jCheckBox4;
    private javax.swing.JCheckBox jCheckBox5;
    private javax.swing.JCheckBox jCheckBox6;
    private javax.swing.JCheckBox jCheckBox7;
    private javax.swing.JCheckBox jCheckBox8;
    private javax.swing.JCheckBox jCheckBox9;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTabbedPane jTabbedPane1;
    private javax.swing.JTree jTree1;
    private javax.swing.JTree jTree2;
    // End of variables declaration
    private String value = "testing";
}
}
 

thank you very much for guiding
[ December 17, 2005: Message edited by: Nakata kokuyo ]

[Nakata kokuyo]

settled, dimesion not set properly