GUI problem

[Taker]

Hi i am tryin to write a recording class in java which i have done but i have to convert the recording class into a GUI i have done the coding for it but i want buttons that allows you to cyle to the nex and previous record detail if anyone can help me it would be fantastic

package music;


import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.*;

public class Music extends JFrame implements ActionListener
{
    //construct components
    JTextPane textPane = new JTextPane();

    //initialize data in arrays
    String artistName[] = {"Metallica", "Guns N Roses", "Dr Dre", "Soul Asylum"};
    String genre[] = {"Heavy Metal", "Heavy Metal", "Rap", "Rock"};
    String greatestHit[] = {"One", "Don't Cry", "Chronic", "Run Away Train"};
    String recordLabel[] = {"Def Jams", "Sony", "DeathRow","Artista"};

    //construct instance of FavMusic
    public Music()
    {
        super("Music information");
    }

    //create the menu system
    public JMenuBar createMenuBar()
    {
        //create an instance of the the menu
        JMenuBar mnuBar = new JMenuBar();
        setJMenuBar(mnuBar);

        //construct and populate the file menu
        JMenu mnuFile = new JMenu("File", true);
            mnuFile.setMnemonic(KeyEvent.VK_F);
            mnuFile.setDisplayedMnemonicIndex(0);
            mnuBar.add(mnuFile);

        JMenuItem mnuFileExit = new JMenuItem("Exit");
            mnuFileExit.setMnemonic(KeyEvent.VK_X);
            mnuFileExit.setDisplayedMnemonicIndex(1);
            mnuFile.add(mnuFileExit);
            mnuFileExit.setActionCommand("Exit");
            mnuFileExit.addActionListener(this);

        //construct and populate the Edit menu
        JMenu mnuEdit = new JMenu("Edit", true);
            mnuEdit.setMnemonic(KeyEvent.VK_E);
            mnuEdit.setDisplayedMnemonicIndex(0);
            mnuBar.add(mnuEdit);

        JMenuItem mnuEditInsert = new JMenuItem("Insert New Music");
            mnuEditInsert.setMnemonic(KeyEvent.VK_I);
            mnuEditInsert.setDisplayedMnemonicIndex(0);
            mnuEdit.add(mnuEditInsert);
            mnuEditInsert.setActionCommand("Insert");
            mnuEditInsert.addActionListener(this);

        JMenu mnuEditSort = new JMenu("Sort");
            mnuEditSort.setMnemonic(KeyEvent.VK_R);
            mnuEditSort.setDisplayedMnemonicIndex(3);
            mnuEdit.add(mnuEditSort);

        JMenuItem mnuEditSortByartistName = new JMenuItem("by Artist");
            mnuEditSortByartistName.setMnemonic(KeyEvent.VK_T);
            mnuEditSortByartistName.setDisplayedMnemonicIndex(3);
            mnuEditSort.add(mnuEditSortByartistName);
            mnuEditSortByartistName.setActionCommand("artistName");
            mnuEditSortByartistName.addActionListener(this);

        JMenuItem mnuEditSortByGenre =  new JMenuItem("by Genre");
            mnuEditSortByGenre.setMnemonic(KeyEvent.VK_S);
            mnuEditSortByGenre.setDisplayedMnemonicIndex(3);
            mnuEditSort.add(mnuEditSortByGenre);
            mnuEditSortByGenre.setActionCommand("genre");
            mnuEditSortByGenre.addActionListener(this);

        JMenuItem mnuEditSortBygreatestHit = new JMenuItem("by Greatest Hit");
            mnuEditSortBygreatestHit.setMnemonic(KeyEvent.VK_Y);
            mnuEditSortBygreatestHit.setDisplayedMnemonicIndex(3);
            mnuEditSort.add(mnuEditSortBygreatestHit);
            mnuEditSortBygreatestHit.setActionCommand("greatestHit");
            mnuEditSortBygreatestHit.addActionListener(this);

        JMenuItem mnuEditSortByrecordLabel = new JMenuItem("by Record Label");
            mnuEditSortByrecordLabel.setMnemonic(KeyEvent.VK_T);
            mnuEditSortByrecordLabel.setDisplayedMnemonicIndex(3);
            mnuEditSort.add(mnuEditSortByrecordLabel);
            mnuEditSortByrecordLabel.setActionCommand("recordLabel");
            mnuEditSortByrecordLabel.addActionListener(this);

        return mnuBar;
    }

    //create the content pane
    public Container createContentPane()
    {
            //create the JTextPane and center panel
            JPanel centerPanel = new JPanel();
                setTabsAndStyles(textPane);
                textPane = addTextToTextPane();
                JScrollPane scrollPane = new JScrollPane(textPane);
                    scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
                    scrollPane.setPreferredSize(new Dimension(500, 200));
                    scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
                    scrollPane.setPreferredSize(new Dimension(500, 200));
                centerPanel.add(scrollPane);

            //create container and set attributes
            Container c = getContentPane();
                c.setLayout(new BorderLayout(1,5));
                //c.add(northPanel, BorderLayout.NORTH);
                c.add(centerPanel, BorderLayout.CENTER);

            return c;
        }

        //method to create tabe stops and set font style
        protected void setTabsAndStyles(JTextPane textPane)
        {
            //create Tab Stops
            TabStop[] tabs = new TabStop[2];
                tabs[0] = new TabStop(200, TabStop.ALIGN_LEFT, TabStop.LEAD_NONE);
                tabs[1] = new TabStop(350, TabStop.ALIGN_LEFT, TabStop.LEAD_NONE);
            TabSet tabset = new TabSet(tabs);

            //set Tab Style
            StyleContext tabStyle = StyleContext.getDefaultStyleContext();
            AttributeSet aset =
                tabStyle.addAttribute(SimpleAttributeSet.EMPTY, StyleConstants.TabSet, tabset);
            textPane.setParagraphAttributes(aset, false);

            //set font style
            Style fontStyle =
                StyleContext.getDefaultStyleContext().getStyle(StyleContext.DEFAULT_STYLE);

            Style regular = textPane.addStyle("regular", fontStyle);
            StyleConstants.setFontFamily(fontStyle, "SansSerif");

            Style s = textPane.addStyle("italic", regular);
            StyleConstants.setItalic(s, true);

            s = textPane.addStyle("bold", regular);
            StyleConstants.setBold(s, true);

            s = textPane.addStyle("large", regular);
            StyleConstants.setFontSize(s, 16);
        }

        //method to add new text to the JTextpane
        public JTextPane addTextToTextPane()
        {
            Document doc = textPane.getDocument();
            try
            {
                //clear previous text
                doc.remove(0, doc.getLength());

                //insert artistName
                doc.insertString(0, "Artist\tGenre\tGreatest Hit\tRecord Label\n", textPane.getStyle("large"));

                //insert detail
                for (int j = 0; j < artistName.length; j++)
                {
                    doc.insertString(doc.getLength(), artistName[j] + "\t",
                    textPane.getStyle("bold"));
                    doc.insertString(doc.getLength(), genre[j] + "\t", textPane.getStyle("italic"));
                    doc.insertString(doc.getLength(), greatestHit[j] + "\t", textPane.getStyle("regular"));
                    doc.insertString(doc.getLength(), recordLabel[j] + "\t", textPane.getStyle("regular"));
                }
            }
            catch (BadLocationException ble)
            {
                System.err.println("Couldn't insert text.");
            }
            return textPane;
        }

        //event to process user clicks
                public void actionPerformed(ActionEvent e)
                {
                    String arg = e.getActionCommand();

                    //user clicks exit on the file menu
                    if (arg == "Exit")
                        System.exit(0);

                    //user clicks Insert New FavMusic on the edit menu
                    if (arg == "Insert")
                    {
                        //accept new data
                        String newartistName = JOptionPane.showInputDialog(null, "Please enter the new Artist");
                        String newGenre = JOptionPane.showInputDialog(null, "Please enter the genre for " + newartistName);
                        String newgreatestHit = JOptionPane.showInputDialog(null, "Please enter the Greatest Hit for for " + newartistName);
                        String newrecordLabel = JOptionPane.showInputDialog(null, "Please enter the Record Label for for " + newartistName);

                        //enlarge array
                        artistName = enlargeArray(artistName);
                        genre = enlargeArray(genre);
                        greatestHit = enlargeArray(greatestHit);
                        recordLabel = enlargeArray(recordLabel);

                        //add new data to arrays
                        artistName[artistName.length-1] = newartistName;
                        genre[genre.length-1] = newGenre;
                        greatestHit[greatestHit.length-1] = newgreatestHit;
                        recordLabel[recordLabel.length-1] = newrecordLabel;

            //call sort method

            // COMMENTED OUT s AND CHANGED SORT CALL TO NOW TAKE TWO PARAMETERS

            //String[] s = new String[]{arg, artistName};  
            sort(arg, artistName);
      }

      //user clicks artistName on the search submenu
      if (arg == "artistName")
            sort(arg, artistName);

      //user clicks genre on the search submenu
      if (arg == "genre")
            sort(arg, genre);

      //user clicks greatestHit on the search submenu
      if (arg == "greatestHit")
            sort(arg, greatestHit);

      //user clicks recordLabel on the search submenu
      if (arg == "recordLabel")
            sort(arg, recordLabel);
}

//method to enlarge an array by 1
public String[] enlargeArray(String[] currentArray)
{
      String[] newArray = new String[currentArray.length + 1];
      for (int i = 0; i < currentArray.length; i++)
            newArray[i] = currentArray[i];
      return newArray;
}

//method to sort arrays
public void sort(String arg, String tempArray[])
{
      //loop to control number of passes
      for (int pass = 1; pass <tempArray.length; pass++)
      {
            for (int element = 0; element < tempArray.length - 1; element ++)
                  if (tempArray[element].compareTo(tempArray[element + 1]) > 0)
                  {
                        swap (artistName, element, element + 1);
                        swap (genre, element, element + 1);
                        swap (greatestHit, element, element + 1);
                        swap (recordLabel, element, element + 1);
                    }
            }
            addTextToTextPane();
        }

        //method to swap two elements of an array
        public void swap(String swapArray[], int first, int second)
        {
            String hold;  //temporary area for swap
            hold = swapArray[first];
            swapArray[first] = swapArray[second];
            swapArray[second] = hold;
        }


         //main method executes at run time
         public static void main(String arg[])
         {
             JFrame.setDefaultLookAndFeelDecorated(true);
             Music f = new Music();
             f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
             f.setJMenuBar(f.createMenuBar());
             f.setContentPane(f.createContentPane());
             f.setSize(600, 275);
             f.setVisible(true);
         }
}

[Ezzaral]

Perhaps you would like to explain which methods you are having trouble with in that wall of code? That's a lot of extraneous UI code to wade through to distill the relevant pieces you want to work with.

[Taker]

package musicgui;

import java.awt.event.ActionEvent;
import javax.swing.*;


public class MG extends JFrame 
{

  
    String Titles[] = {"Artist Name", "Title of Song", "Genre"};

    //initialize data in arrays
    String r1[] = {"Metallica", "Memory Remains", "Rock"};
  
    JPanel Panel = new JPanel();
    JButton jbtNext = new JButton("Next"); 
    JButton jbtPrev = new JButton("Previous");
    jbtNext.setToolTipText("Takes you to next record");
    jbtPrev.setToolTipText("Takes you to previous record");
    Panel.add(jbtNext);
    Panel.add(jbtPrev);
   }   
   
    public void actionPerformed(ActionEvent e)
                {
                    String arg = e.getActionCommand();

                    //user clicks exit on the file menu
                    if (arg == "Next")
                    {
                         String r2[] = {"The Hives", "Walk Idiot Walk", "Rock"};
                    }
                    if (arg == "Previous")
                    {
                     String r1[] = {"Metallica", "Memory Remains", "Rock"};   
                    }
                }

    JFrame frame = new JFrame();
    frame.add(Panel);
    frame.setTitle("Music Records");
    frame.setSize(200,150);
    frame.setLocation(200,100);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setVisible(true);
    
    }
}

Re-wrote code instead of a JMenu it know takes Jbuttons the problem i am having know is getting the buttons to go backwards and forwards through the set of recordings i have named above and also getting the record to display in the GUI it just show me a blnk GUI. I am trying to get the details of the current recording should be displayed at any point in time.

[Ezzaral]

Consider that it would be much more effective to work with objects that contain the data for each entry rather than arrays of individual Strings that are arbitrarily related by their positions.

A single list of those objects can easily be traversed by keeping a current index pointer.

To change the GUI fields, you have to set the new values to be shown from the object at the current index.