Error with - addStylesToDocument(doc); please help

Question

Hello, this is my unfinished code for a simple program I am writing. Basically I have a menu and buttons, and am looking to add a JTextPane. I think I have all the code there, except when compiling I am having an error with line addStylesToDocument(doc); if I comment this out then nothing happens but the program runs as normal (before I added the JTextPane code) the error I am getting is "non-static method addStylesToDocument(javax.swing.text.StyledDocument) cannot be referenced from a static context" this makes a little sence to me but not enough to be able to correct it as I am pretty much a beginner...
If anyone has any suggestions to fix this I would appreciate your input.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.event.*;
import javax.swing.*;
import javax.swing.text.*;
public class ShoppingCart extends JPanel
                        implements ActionListener {
    protected JButton bapple, borange, bbanana, bstrawberry, blemon, bgrape, b7, b8, b9, b10;
    public JMenuBar createMenuBar() {
     JMenuBar menuBar;
     JMenu menu, submenu;
     JMenuItem menuItem;
     JRadioButtonMenuItem rbMenuItem;
     JCheckBoxMenuItem cbMenuItem;
menuBar = new JMenuBar();
menuBar.setBackground(Color.white);
      menu = new JMenu("A Menu");
      menu.setBackground(Color.white);
        menu.setMnemonic(KeyEvent.VK_A);
        menu.getAccessibleContext().setAccessibleDescription(
                "The only menu in this program that has menu items");
        menuBar.add(menu);
      //a group of JMenuItems
      menuItem = new JMenuItem("A text-only menu item",
                                 KeyEvent.VK_T);
        //menuItem.setMnemonic(KeyEvent.VK_T); //used constructor instead
         menuItem.setBackground(Color.white);
         menuItem.setAccelerator(KeyStroke.getKeyStroke(
            KeyEvent.VK_1, ActionEvent.ALT_MASK));
       menuItem.getAccessibleContext().setAccessibleDescription(
       "This doesn't really do anything");
        menu.add(menuItem);
        ImageIcon icon = createImageIcon("/orange.gif");
        menuItem = new JMenuItem ("Both text and icon", icon);
        menuItem.setMnemonic(KeyEvent.VK_B);
        menuItem.setBackground(Color.white);
      menu.add(menuItem);
      menuItem = new JMenuItem(icon);
      menuItem.setMnemonic(KeyEvent.VK_D);
      menuItem.setBackground(Color.white);
      menu.add(menuItem);
      //a group of radio button menu items
      menu.addSeparator();
      ButtonGroup group = new ButtonGroup();
      rbMenuItem = new JRadioButtonMenuItem("A radio button menu item");
      rbMenuItem.setSelected(true);
      rbMenuItem.setMnemonic(KeyEvent.VK_R);
      rbMenuItem.setBackground(Color.white);
      group.add(rbMenuItem);
      menu.add(rbMenuItem);
      //a group if check box menu items
      menu.addSeparator();
      cbMenuItem = new JCheckBoxMenuItem("A check box menu item");
      cbMenuItem.setMnemonic(KeyEvent.VK_C);
      cbMenuItem.setBackground(Color.white);
      menu.add(cbMenuItem);
      cbMenuItem = new JCheckBoxMenuItem("Another one");
      cbMenuItem.setMnemonic(KeyEvent.VK_H);
      cbMenuItem.setBackground(Color.white);
      menu.add(cbMenuItem);
      //a submenu
      menu.addSeparator();
      submenu = new JMenu("A submenu");
      submenu.setBackground(Color.white);
      submenu.setMnemonic(KeyEvent.VK_S);
      menuItem = new JMenuItem("An  item in the submenu");
      menuItem.setAccelerator(KeyStroke.getKeyStroke(
      KeyEvent.VK_2, ActionEvent.ALT_MASK));
      menuItem.setBackground(Color.white);
      submenu.add(menuItem);
      menuItem = new JMenuItem("Another item");
      menuItem.setBackground(Color.white);
      submenu.add(menuItem);
      menu.add(submenu);
      //Build second menu in the menu bar
      menu = new JMenu("Another Menu");
      menu.setBackground(Color.white);
      menu.setMnemonic(KeyEvent.VK_N);
      menu.getAccessibleContext().setAccessibleDescription(
      "This menu does nothing");
      menuBar.add(menu); 
return menuBar;
    public ShoppingCart() {
        ImageIcon appleButtonIcon = createImageIcon("/apple.gif");
        ImageIcon orangeButtonIcon = createImageIcon("/orange.gif");
        ImageIcon bananaButtonIcon = createImageIcon("/banana.gif");
        ImageIcon strawberryButtonIcon = createImageIcon("/strawberry.gif");
        ImageIcon lemonButtonIcon = createImageIcon("/lemon.gif");
        ImageIcon grapeButtonIcon = createImageIcon("/grape.gif");
        bapple = new JButton(null,  appleButtonIcon);
        bapple.setVerticalTextPosition(AbstractButton.CENTER);
        bapple.setBackground(Color.white);
        bapple.setHorizontalTextPosition(AbstractButton.LEADING);
        bapple.setMnemonic(KeyEvent.VK_D);
        bapple.setActionCommand("apple");
        borange = new JButton(null, orangeButtonIcon);
        borange.setVerticalTextPosition(AbstractButton.BOTTOM);
        borange.setBackground(Color.white);
        borange.setHorizontalTextPosition(AbstractButton.CENTER);
        borange.setMnemonic(KeyEvent.VK_M);
        borange.setActionCommand("orange");
        bbanana = new JButton(null, bananaButtonIcon);
        bbanana.setBackground(Color.white);
        bbanana.setMnemonic(KeyEvent.VK_E);
        bbanana.setActionCommand("banana");
        bstrawberry = new JButton(null,  strawberryButtonIcon);
        bstrawberry.setVerticalTextPosition(AbstractButton.CENTER);
        bstrawberry.setBackground(Color.white);
        bstrawberry.setHorizontalTextPosition(AbstractButton.LEADING); //aka LEFT, for left-to-right locales
        bstrawberry.setActionCommand("strawberry");
        blemon = new JButton(null,  lemonButtonIcon);
        blemon.setBackground(Color.white);
        blemon.setVerticalTextPosition(AbstractButton.CENTER);
        blemon.setHorizontalTextPosition(AbstractButton.LEADING); //aka LEFT, for left-to-right locales
        blemon.setActionCommand("lemon");
        bgrape = new JButton(null,  grapeButtonIcon);
        bgrape.setBackground(Color.white);
        bgrape.setVerticalTextPosition(AbstractButton.CENTER);
        bgrape.setHorizontalTextPosition(AbstractButton.LEADING); //aka LEFT, for left-to-right locales
        bgrape.setActionCommand("grape");
        /*b7 = new JButton(null,  leftButtonIcon);
        b7.setVerticalTextPosition(AbstractButton.CENTER);
        b7.setHorizontalTextPosition(AbstractButton.LEADING); //aka LEFT, for left-to-right locales
        b8 = new JButton(null,  leftButtonIcon);
        b8.setVerticalTextPosition(AbstractButton.CENTER);
        b8.setHorizontalTextPosition(AbstractButton.LEADING); //aka LEFT, for left-to-right locales
        b9 = new JButton(null,  leftButtonIcon);
        b9.setVerticalTextPosition(AbstractButton.CENTER);
        b9.setHorizontalTextPosition(AbstractButton.LEADING); //aka LEFT, for left-to-right locales
        b10 = new JButton(null,  leftButtonIcon);
        b10.setVerticalTextPosition(AbstractButton.CENTER);
        b10.setHorizontalTextPosition(AbstractButton.LEADING); //aka LEFT, for left-to-right locales
        //Listen for actions on buttons
        bapple.addActionListener(this);
        borange.addActionListener(this);
        bbanana.addActionListener(this);
        bstrawberry.addActionListener(this);
        blemon.addActionListener(this);
        bgrape.addActionListener(this);
        bapple.setToolTipText("Apple.");
        borange.setToolTipText("Orange.");
        bbanana.setToolTipText("Banana.");
        bstrawberry.setToolTipText("Strawberry.");
        blemon.setToolTipText("Lemon.");
        bgrape.setToolTipText("Grape.");
       /* b7.setToolTipText("7");
        b8.setToolTipText("8");
        b9.setToolTipText("9");
        b10.setToolTipText("10");
        //Add Components to this container, using the default FlowLayout.
        add(bapple);
        add(borange);
        add(bbanana);
        add(bstrawberry);
        add(blemon);
        add(bgrape);
       /* add(b7);
        add(b8);
        add(b9);
        add(b10);*/
    public void actionPerformed(ActionEvent e) {
        if ("apple".equals(e.getActionCommand())) {
       String  input1 =  JOptionPane.showInputDialog( "How many apples would you like to purchase?" );
        int  number1 = Integer.parseInt( input1 );
         if ("orange".equals(e.getActionCommand())) {
       String  input2 =  JOptionPane.showInputDialog( "How many oranges would you like to purchase?" );
       int  number2 = Integer.parseInt( input2 );
           if ("banana".equals(e.getActionCommand())) {
       String  input3 =  JOptionPane.showInputDialog( "How many bananas would you like to purchase?" );
       int  number3 = Integer.parseInt( input3 );
         if ("strawberry".equals(e.getActionCommand())) {
       String  input4 =  JOptionPane.showInputDialog( "Enter weight of strawberries : " );
       int  number4 = Integer.parseInt( input4 );
         if ("lemon".equals(e.getActionCommand())) {
       String  input5 =  JOptionPane.showInputDialog( "How many lemons would you like to purchase?" );
       int  number5 = Integer.parseInt( input5 );
         if ("grape".equals(e.getActionCommand())) {
       String  input6 =  JOptionPane.showInputDialog( "Enter weight of grapes : " );
       int  number6 = Integer.parseInt( input6 );
    /** Returns an ImageIcon, or null if the path was invalid. */
    protected static ImageIcon createImageIcon(String path) {
        java.net.URL imgURL = ShoppingCart.class.getResource(path);
        if (imgURL != null) {
            return new ImageIcon(imgURL);
        } else {
            System.err.println("Couldn't find file: " + path);
            return null;
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
    private static void createAndShowGUI() {
//Create and set up the window.
        JFrame frame = new JFrame("Shopping Cart");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        //Create and set up the content pane.
        ShoppingCart newContentPane = new ShoppingCart();
        newContentPane.setOpaque(true); //content panes must be opaque
        frame.setContentPane(newContentPane);
        newContentPane.setBackground(Color.white);
       frame.setJMenuBar(newContentPane.createMenuBar());
        //Display the window.
        frame.pack();
        frame.setVisible(true);
        String[] initString =
        { /* ...  fill array with initial text  ... */ };
        String[] initStyles =
        { /* ...  fill array with names of styles  ... */ };
        JTextPane textPane = new JTextPane();
        StyledDocument doc = textPane.getStyledDocument();
        addStylesToDocument(doc);
        //Load the text pane with styled text.
        try {
        for (int i=0; i < initString.length; i++) {
        doc.insertString(doc.getLength(), initString,
doc.getStyle(initStyles[i]));
} catch (BadLocationException ble) {
System.err.println("Couldn't insert initial text into text pane.");
}protected void addStylesToDocument (StyledDocument doc) {
Style def=new StyleContext ().getStyle (StyleContext.DEFAULT_STYLE);
Style heading = doc.addStyle ("bold", null);
StyleConstants.setFontFamily (heading, "SansSerif");
StyleConstants.setBold (heading, true);
StyleConstants.setFontSize (heading,30);
// * The next 3 don't work if that line is commented out
StyleConstants.setAlignment (heading, StyleConstants.ALIGN_CENTER);
StyleConstants.setSpaceAbove (heading, 10);
StyleConstants.setSpaceBelow (heading, 10);
public static void main() {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();

Answer 1

CPie wrote:
o..k.
I see that you have run out of helpfulness for this session, What the ....? I just told you to add your jtextfield to a jpanel or some other visible component to be seen.
it is getting late here I will take my business elsewhere tomorrow rather than waiting up for a response which shows you realllly need to find something better to do! And thanks for the help earlier. That was actually useful whereas this wasn't, I'm sure you knew that already,You know that we are all volunteers here. Any time spent here helping you is time away from our friends and families. A little more appreciation is definitely in order or go somewhere else and pay for your help.