Adding serious of object to scroll pane

hi,
is it possiable to add a serious of text object to scrollpane.
Now i have a table with 30 column each column total has to display on text, so i want to maintain 30 text. How can i set bound of this much components
Pappiiiiiiiii

I presume you want to add a series of Text objects - this may give you an idea:
import java.awt.BorderLayout;
import java.awt.GridLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
public class ManyTextWindow extends JFrame
    JTextField fields [] = new JTextField[50];
    public ManyTextWindow(){
        init();
    public void init(){
        // I use a gridlayout on some panel
        JPanel p = new JPanel();
        p.setLayout(new GridLayout(0,2));
        // create the textfields and add them
        for(int i=0; i<fields.length; i++)
            p.add(new JLabel("Textfield " + i + ":"));
            fields[i] = new JTextField(String.valueOf(i));
            p.add(fields);
JScrollPane pane = new JScrollPane();
pane.setViewportView(p);
add(pane, BorderLayout.CENTER);
setDefaultCloseOperation(EXIT_ON_CLOSE);
public static void main(String [] args)
new ManyTextWindow().setVisible(true);

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    Secondly the scroll panel is no longer working properly. This worked fine when I was still running the program as an application when the GUI still extended JFrame instead of JPanel (incidentally the program no longer runs as an application in this state) but now the scroll bar does not appear. This is a problem since I want the applet to remain the same size on the page even if I decide to add more backgrounds to the list. I tried setting the applet height/width to smaller values in the html file to see if the scroll bar would appear if the area was smaller than the GUI should be, but this just meant the bottom off the applet was cut off.
    Could anyone offer any suggestion as to why these thigns arnt working and how to fix them? If necessary I can post my source code here. Thanks in advance.

    Ok, well my program is made up of 4 classes, I hope this isnt too much to be posting. If any explaination is needed then I'll post that next. Theres lots of print lines scattered aroudn due to me trying to fix this and theres some stuff commented out from when the program used to be an application isntead of an applet.
    GUI Class, this was the main class until I made a JApplet Class
    public class AppletGUI extends JPanel{
        *GUI Components*
        //JFrames
        JFrame mainGUIFrame = new JFrame();
        JFrame changeBackgroundFrame = new JFrame();
        //JPanels (Sub-panels are indented)
        JPanel changeBackgroundJP = new JPanel(new BorderLayout());
            JPanel changeBackgroundBottomJP = new JPanel(new GridLayout(1,2));
        JPanel backgroundJP = new JPanel(new GridLayout(1,2));
        JPanel selectBackground = new JPanel(new GridLayout(1,2));
        //Jbuttons
        JButton changeBackgroundJB = new JButton("Change Background");
        JButton defaultStyleJB = new JButton("Reset Style");
        //JLabels
        JLabel changeBackgroundJL = new JLabel("Choose a Background from the Menu");
        JLabel backgroundJL = new JLabel();
        //JScrollPane
        JScrollPane backgroundList = new JScrollPane();
            JPanel backgroundListPanel = new JPanel(new GridLayout());
        //Action Listeners
        ButtonListener bttnLstnr = new ButtonListener();
        //Controllers
        CSSGenerator cssGenerator = new CSSGenerator();
        Backgrounds backgroundsController = new Backgrounds();
        backgroundMouseListener bgMouseListener = new backgroundMouseListener();
        //Flags
        Component selectedComponent = null;
        *Colour Changer*
        //this method is used to change the colour of a selected JP
        //selected JPs have their background darkered and when a
        //different JP is selected the previously seleced JP has its
        //colour changed back to it's original.
        public void changeColour(JPanel theJPanel, boolean isDarker){
        //set selected JP to a different colour
        Color tempColor = theJPanel.getBackground();
            if(isDarker){
                tempColor = tempColor.darker();
            else{
                tempColor = tempColor.brighter();
            theJPanel.setBackground(tempColor);
         //also find any sub-JPs and change their colour to match
         int j = theJPanel.getComponents().length;
         for(int i = 0; i < j; i++){
                String componentType = theJPanel.getComponent(i).getClass().getSimpleName();
                if(componentType.equals("JPanel")){
                    theJPanel.getComponent(i).setBackground(tempColor);
        *Populating the GUI*
        //backgroundList.add();
        //Populating the Backgrounds List
        *Set Component Size Method*
        public void setComponentSize(Component component, int width, int height){
        Dimension tempSize = new Dimension(width, height);
        component.setSize(tempSize);
        component.setMinimumSize(tempSize);
        component.setPreferredSize(tempSize);
        component.setMaximumSize(tempSize);     
        *Constructor*
        public AppletGUI() {
            //REMOVED CODE
            //AppletGUI.setDefaultLookAndFeelDecorated(true);
            //Component Sizes
            //setComponentSize
            //Adding Action Listeners to Components
            System.out.println("adding actions listeners to components");
            changeBackgroundJB.addActionListener(bttnLstnr);
            defaultStyleJB.addActionListener(bttnLstnr);
            //Populating the Change Background Menu
            System.out.println("Populating the window");
            backgroundsController.populateBackgroundsData();
            backgroundsController.populateBackgroundsList();
            //loops to add background panels to the JSP
            ArrayList<JPanel> tempBackgroundsList = new ArrayList<JPanel>();
            JPanel tempBGJP = new JPanel();
            tempBackgroundsList = backgroundsController.getBackgroundsList();
            int j = tempBackgroundsList.size();
            JPanel backgroundListPanel = new JPanel(new GridLayout(j,1));
            for(int i = 0; i < j; i++){
                tempBGJP = tempBackgroundsList.get(i);
                System.out.println("Adding to the JSP: " + tempBGJP.getName());
                //Add Mouse Listener
                tempBGJP.addMouseListener(bgMouseListener);
                backgroundListPanel.add(tempBGJP, i);
            //set viewpoing
            backgroundList.setViewportView(backgroundListPanel);
            /*TESTING
            System.out.println("\n\n TESTING!\n Printing Content of SCROLL PANE \n");
            j = tempBackgroundsList.size();
            for(int i = 0; i < j; i++){
                System.out.println(backgroundList.getComponent(i).getName());
            changeBackgroundJP.add(changeBackgroundJL, BorderLayout.NORTH);
            changeBackgroundJP.add(backgroundList, BorderLayout.CENTER);
            //changeBackgroundJP.add(tempBGJP, BorderLayout.CENTER);
            changeBackgroundJP.add(changeBackgroundBottomJP, BorderLayout.SOUTH);
            changeBackgroundBottomJP.add(changeBackgroundJB);
            changeBackgroundBottomJP.add(defaultStyleJB);
            System.out.println("Finsihed populating");
            //REMOVED CODE
            //adding the Background Menu to the GUI and settign the GUI options
            //AppletGUI.setDefaultLookAndFeelDecorated(true);
            //this.setResizable(true);
            //this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            this.setLocation(500,500);
            this.setSize(400,300);
            this.add(changeBackgroundJP);
        //REMOVED CODE
         *Main Method*
        public static void main(String[] args){
           System.out.println("Creating GUI");
           AppletGUI theGUI = new AppletGUI();
           theGUI.setVisible(true);
           System.out.println("GUI Displayed");
         *Button Listener Inner Class*
        public class ButtonListener implements ActionListener{
            //check which button is clicked
            public void actionPerformed(ActionEvent event) {
                AbstractButton theButton = (AbstractButton)event.getSource();
                //Default Style Button
                if(theButton == defaultStyleJB){
                    System.out.println("Default Style Button Clicked!");
                //Change Background Button
                if(theButton == changeBackgroundJB){
                    System.out.println("Change Background Button Clicked!");
                    String backgroundURL = cssGenerator.getBackground();
                    if(backgroundURL != ""){
                        cssGenerator.setBackgroundChanged(true);
                        cssGenerator.setBackground(backgroundURL);
                        cssGenerator.outputCSSFile();
                        System.out.println("Backgroudn Changed, CSS File Written");
                    else{
                        System.out.println("No Background Selected");
         *Mouse Listener Inner Class*
        public class backgroundMouseListener implements MouseListener{
            public void mouseClicked(MouseEvent e){
                //get component
                JPanel tempBackgroundJP = new JPanel();
                tempBackgroundJP = (JPanel)e.getComponent();
                System.out.println("Background Panel Clicked");
                //change component colour
                if(selectedComponent == null){
                    selectedComponent = tempBackgroundJP;
                else{
                    changeColour((JPanel)selectedComponent, false);
                    selectedComponent = tempBackgroundJP;
                changeColour((JPanel)selectedComponent, true);
                //set background URL
                cssGenerator.setBackground(tempBackgroundJP.getName());
            public void mousePressed(MouseEvent e){
            public void mouseReleased(MouseEvent e){
            public void mouseEntered(MouseEvent e){
            public void mouseExited(MouseEvent e){
    }JApplet Class, this is what I plugged the GUI into after I made the change from Application to JApplet.
    public class AppletTest extends JApplet{
        public void init() { 
            System.out.println("Creating GUI");
            AppletGUI theGUI = new AppletGUI();
            theGUI.setVisible(true);
            Container content = getContentPane();
            content.setBackground(Color.white);
            content.setLayout(new FlowLayout());
            content.add(theGUI);
            AppletGUI theGUI = new AppletGUI();
            theGUI.setVisible(true);
            setContentPane(theGUI);
            System.out.println("GUI Displayed");
        public static void main(String[] args){
            AppletTest at = new AppletTest();
            at.init();
            at.start();
    }The CSS Generator Class. This exists because once I have the basic program working I intend to expand upon it and add multiple tabs to the GUI, each one allowing the user to change different style options. Each style option to be changed will be changed wit ha different method in this class.
    public class CSSGenerator {
        //Variables
        String background = "";
        ArrayList<String> backgroundCSS;
        //Flags
        boolean backgroundChanged = false;
        //Sets and Gets
        //For Variables
        public void setBackground(String theBackground){
            background = theBackground;
        public String getBackground(){
            return background;
        //For Flags
        public void setBackgroundChanged(boolean isBackgroundChanged){
            backgroundChanged = isBackgroundChanged;
        public boolean getBackgroundChanged(){
            return backgroundChanged;
        //background generator
        public ArrayList<String> backgroundGenerator(String backgroundURL){
            //get the URL for the background
            backgroundURL = background;
            //creat a new array list of strings
            ArrayList<String> backgroundCSS = new ArrayList<String>();
            //add the strings for the background options to the array list
            backgroundCSS.add("body");
            backgroundCSS.add("{");
            backgroundCSS.add("background-image: url(" + backgroundURL + ");");
            backgroundCSS.add("background-color: #ff0000");
            backgroundCSS.add("}");
            return backgroundCSS;
        //Write CSS to File
        public void outputCSSFile(){
            try{
                //Create CSS file
                System.out.print("creating file");
                FileWriter cssWriter = new FileWriter("C:/Documents and Settings/Gwilym/My Documents/Applet Data/CustomStyle.css");
                System.out.print("file created");
                System.out.print("creating buffered writer");
                BufferedWriter out = new BufferedWriter(cssWriter);
                System.out.print("buffered writer created");
                //check which settings have been changed
                //check background flag
                if(getBackgroundChanged() == true){
                    System.out.print("retrieving arraylist");
                    ArrayList<String> tempBGOptions = backgroundGenerator(getBackground());
                    System.out.print("arraylist retrieved");
                    int j = tempBGOptions.size();
                    for(int i = 0; i < j ; i++){
                        System.out.print("writing to the file");
                        out.write(tempBGOptions.get(i));
                        out.newLine();
                        System.out.print("written to the file");
                out.close();
            }catch (Exception e){//Catch exception if any
                System.out.println("Error: Failed to write CSS file");
        /** Creates a new instance of CSSGenerator */
        public CSSGenerator() {
    }The Backgrounds Class. This class exists because I didnt want there to just be a hardcoded lsit of backgrounds, I wanted it to be possible to add new ones to the list without simply lettign users upload their own images (since the intended users are kids and this sharepoint site is used for educational purposes, I dont want them uplaoded inapropraite backgrounds) but I do want the site admin to be able to add more images to the list. for this reason the backgrounds are taken from a list in a text file that will be stored in the same location as the applet, the file specifies the background name, where it is stored, and where a thumbnail image is stored.
    public class Backgrounds {
        //Array Lists
        private ArrayList<JPanel> backgroundsList;
        private ArrayList<String> backgroundsData;
        //Set And Get Methods
        public ArrayList getBackgroundsList(){
            return backgroundsList;
        //ArrayList Population Methods
        public void populateBackgroundsData(){
            //decalre the input streams and create a new fiel hat points to the BackgroundsData file
            File backgroundsDataFile = new File("C:/Documents and Settings/Gwilym/My Documents/Applet Data/BackgroundsData.txt");
            FileInputStream backgroundsFIS = null;
            BufferedInputStream backgroundsBIS = null;
            DataInputStream backgroundsDIS = null;
            try {
                backgroundsFIS = new FileInputStream(backgroundsDataFile);
                backgroundsBIS = new BufferedInputStream(backgroundsFIS);
                backgroundsDIS = new DataInputStream(backgroundsBIS);
                backgroundsData = new ArrayList<String>();
                String inputtedData = null;
                //loops until it reaches the end of the file
                while (backgroundsDIS.available() != 0) {
                    //reads in the data to be stored in an array list
                    inputtedData = backgroundsDIS.readLine();
                    backgroundsData.add(inputtedData);
            //TESTING
            System.out.println("\n\nTESTING: populateBackgroundsData()");
            int j = backgroundsData.size();
            for(int i = 0; i < j; i++){
                System.out.println("Index " + i + " = " + backgroundsData.get(i));
            System.out.println("\n\n");
            //close all stremas
            backgroundsFIS.close();
            backgroundsBIS.close();
            backgroundsDIS.close();
            } catch (FileNotFoundException e) {
                System.out.println("Error: File Not Found");
            } catch (IOException e) {
                System.out.println("Error: IO Exception Thrown");
        public void populateBackgroundsList(){
            backgroundsList = new ArrayList<JPanel>();
            int j = backgroundsData.size();
            System.out.println("number of backgrounds = " + j);
            backgroundsList = new ArrayList<JPanel>();
            for(int i = 0; i < j; i++){
                String tempBackgroundData = backgroundsData.get(i);
                JPanel backgroundJP = new JPanel(new GridLayout(1,2));
                JLabel backgroundNameJL = new JLabel();               
                JLabel backgroundIconJL = new JLabel();
                //split the string string and egt the background name and URL
                String[] splitBGData = tempBackgroundData.split(",");
                String backgroundName = splitBGData[0];
                String backgroundURL = splitBGData[1];
                String backgroundIcon = splitBGData[2];
                System.out.println("\nbackgroundName = " + backgroundName);
                System.out.println("\nbackgroundURL = " + backgroundURL);
                System.out.println("\nbackgroundIcon = " + backgroundIcon + "\n");
                backgroundNameJL.setText(backgroundName);
                backgroundIconJL.setIcon(new javax.swing.ImageIcon(backgroundIcon));
                backgroundJP.add(backgroundNameJL);
                backgroundJP.add(backgroundIconJL);
                backgroundJP.setBorder(javax.swing.BorderFactory.createBevelBorder(javax.swing.border.BevelBorder.RAISED));
                //Name the JP as the background URL so it can be found
                //May be useful sicne the data file may need to contain 3 fields in future
                //this is incase the preview image (icon) is different from the acctual background
                //most liekly in the case of more complex ppictures rather then repeating patterns
                backgroundJP.setName(backgroundURL);
                //Add the JP to the Array List
                backgroundsList.add(backgroundJP);
            //TESTING
            System.out.println("\n\nTESTING: populateBackgroundsList()");
            j = backgroundsList.size();
            for(int i = 0; i < j; i++){
                System.out.println("Index " + i + " = " + backgroundsList.get(i));
            System.out.println("\n\n");
    }So thats my program so far, if theres anythign that needs clarifying then please jsut ask. Thank you very much for the help!

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