Read textfile so I can input it in GUI?

[learntosucceed]

I'm noob at GUI Swing. I have 2 questions.

1)I'm trying to implement a program that reads a text file, so I can use it to add multiple tabs to the program based on the amount of data in the text file. For example, text file have 3 names. I will use the 3 names to make 3 tabs labeling their name in each of them. Where do I call this fileIO, readContacts() part? When I put readContacts() in the Constructor AddTabs(), the program cannot display the frame. When I take readContacts() out of the Contructor, the the program can display the frame.

2)I have JTabbedPane set at Top as default. I want to change JTabbedPane to set it to BOTTOM when I select it in the Tabs Menu -> Layout Placement -> BOTTOM. Did I setup the ActionListener correctly because it doesn't change the JTabbedPane to BOTTOM instead of TOP.

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.Scanner;
 
public class AddTabs
{


   JLabel imageLabel, name, email;
   JTabbedPane tpane;   
   
   public AddTabs()
   {
      //try
      //{

      JFrame frame = new JFrame("AddTabs");    

      frame.setLayout(new FlowLayout());
      frame.setSize(550, 170);
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      
      //creates the menubar part
      JMenuBar menubar = new JMenuBar();
      
//----------------creates the file menu
      JMenu file = new JMenu("File");
      JMenuItem open = new JMenuItem("Open");
      
      //disables open
      open.setEnabled(false);
      file.add(open);
      
      //creates the exit menu
      JMenuItem exit = new JMenuItem("Exit");
      file.addSeparator();
      file.add(exit);
      
      menubar.add(file);
      
      exit.addActionListener(new ActionListener()
      {
         public void actionPerformed(ActionEvent ae)
         {
            System.exit(0);
         }
      });
      
//----------------JMenu for Tabs
      JMenu tabs = new JMenu("Tabs");
      
      //creates Submenu for placements
      JMenu placement = new JMenu("Placement");
      
      JMenuItem top = new JMenuItem("TOP");
      JMenuItem right = new JMenuItem("RIGHT");
      JMenuItem bot = new JMenuItem("BOTTOM");
      JMenuItem left = new JMenuItem("LEFT");
      placement.add(top);
      placement.add(right);
      placement.add(bot);
      placement.add(left);
      tabs.add(placement);
      tabs.addSeparator();  
      
      //creates Submenu for Layout
      JMenu layout = new JMenu("Layout Policy");
      JMenuItem scroll = new JMenuItem("Scroll");
      JMenuItem wrap = new JMenuItem("Wrap");      
      layout.add(scroll);
      layout.add(wrap);
      tabs.add(layout);
      tabs.addSeparator();    
      
      //creates Submenu for defaults
      JMenuItem defaults = new JMenuItem("Defaults");
      tabs.add(defaults);  
      
      menubar.add(tabs);
      
//-------JMenu for Help
      JMenu help = new JMenu("Help");
      JMenuItem about = new JMenuItem("About");
      help.add(about);
      
      menubar.add(help);
      
//----------Create Panel   
      JPanel topPanel = new JPanel(new GridLayout(1,2));
      JPanel leftPanel = new JPanel(new GridLayout(1,1));
      ImageIcon icon = new ImageIcon("test.jpg");
      imageLabel = new JLabel();
      imageLabel.setIcon(icon);
      imageLabel.setHorizontalAlignment(SwingConstants.CENTER);
      leftPanel.add(imageLabel);
        readContacts();    
      JPanel rightPanel = new JPanel();
      
      name = new JLabel("Name:");
      rightPanel.add(name);
      JTextField t1 = new JTextField(19);
      t1.setText("username 1");
      rightPanel.add(t1);
   
      email = new JLabel("Email:");      
      rightPanel.add(email);
      JTextField t2 = new JTextField(19);
      t2.setText("[e-mail]");
      rightPanel.add(t2);
      
      topPanel.add(leftPanel);
      topPanel.add(rightPanel);


      
      tpane = new JTabbedPane();
       right.addActionListener(new ActionListener()
      {
         public void actionPerformed(ActionEvent ae)
         {
            String command = ae.getActionCommand();
            if(command.equals("BOTTOM"))
            {
               tpane = new JTabbedPane(JTabbedPane.BOTTOM);
            }
            else
               tpane = new JTabbedPane();
         }
      });     
      tpane.setPreferredSize(new Dimension(525, 100));
       
      for(int i=0; i<9;i++)
      tpane.addTab("first person", topPanel);

      frame.add(tpane);
      frame.setJMenuBar(menubar);
      frame.setLocationRelativeTo(null);
      frame.setVisible(true);
    }
      //   catch(IOException e)
      //{
      
      //}  
   //}

   public void readContacts()
   {
      try
      {
         File myFile = new File ("contacts.txt");
         Scanner inputFile = new Scanner(myFile);
         
         while (inputFile.hasNext())
         {
            //String extract = inputFile.split("~");
            String[] contacts = new String[5];
            
            int i = 0;
            //contacts[i] = extract;
            i = i+1; //inserts 1 name into each index
         }
         inputFile.close();  
      }
      catch(IOException e)
      {
         
      }
   }
/*
   public void actionPerformed(ActionEvent ae)
   {
      String command = ae.getActionCommand();
      
      if(command.equals("BOTTOM"))
         tpane = new JTabbedPane(JTabbedPane.BOTTOM);
   }
*/
   public static void main(String []args)
   {
      SwingUtilities.invokeLater(new Runnable()
      {
         public void run()
         {
            new AddTabs();
         }
      });
   }
}

[NormR1]

Do you have any questions or problems? Please ask or explain.

[learntosucceed]

Do you have any questions or problems? Please ask or explain.

1)I'm trying to implement a program that reads a text file, so I can use it to add multiple tabs to the program based on the amount of data in the text file. For example, text file have 3 names. I will use the 3 names to make 3 tabs labeling their name in each of them. Where do I call this fileIO, readContacts() part? When I put readContacts() in the Constructor AddTabs(), the program cannot display the frame. When I take readContacts() out of the Contructor, the the program can display the frame.

2)I have JTabbedPane set at Top as default. I want to change JTabbedPane to set it to BOTTOM when I select it in the Tabs Menu -> Layout Placement -> BOTTOM. Did I setup the ActionListener correctly because it doesn't change the JTabbedPane to BOTTOM instead of TOP.

[NormR1]

it doesn't change the JTabbedPane to BOTTOM instead of TOP.

Is the listener method called?

[learntosucceed]

Is the listener method called?

yes... it's called on line #119. When I replace System.out.println("a message") instead of the JTabbedPane part, it displays the message on the cmd prompt. So it does work, but when I replace it with JTabbedPane, nothing happens.

[learntosucceed]

I am wondering if I am suppose to use ActionListener or ChangeStateListener for JTabbedPane

[NormR1]

Line 119 does not call it.
It is called when there is an Event like when you click on a menu item.

[nandosss]

did you solve this problem? i do not know how to read the file to get the contact info
the file is in this order. Each line contains the next info.
Last, First~email~photo.jpg

[NormR1]

@nandosss Please start your own thread. They are free.

[nandosss]

i believe this person and i have the same problem and that it can be solve in just one thread

[NormR1]

I doubt it, unless you are copying his code.

[dantinkakkar]

Please explain in a more lucid tone. And if you have another problem, @nandosss, start a new thread.

[nandosss]

just create an array of JPanel another for the text fields and another for the images and another one for the text labs. Then create a foor loop and in there get the first line and use String.split() on ~ then this will return you and array

JLabel [] name = new JLabel [1000];
		JLabel [] mail = new JLabel [1000];
		JLabel [] photo = new JLabel [1000];
		JTextField [] name1 = new JTextField [1000];
		JTextField [] mail1 = new JTextField [1000];
		File file = new File("contacts.txt");
		
		Scanner sc = new Scanner(file);
		int i = 0;
		
		while(sc.hasNext()){
			contact[i] = new JPanel(new FlowLayout());
			contact[i].setPreferredSize(new Dimension(420,100));
			String next = sc.nextLine();
			name[i] = new JLabel();
			mail[i] = new JLabel();
			name1[i] = new JTextField(25);
			mail1[i] = new JTextField(25);
			
			//ImageIcon pic = new ImageIcon((next.split("~")[2]));
			
			//JLabel picLabel = new JLabel(new ImageIcon( myPicture )); 
			//add( picLabel );
			try{
				BufferedImage myPicture = ImageIO.read(new File(next.split("~")[2])); 
				photo[i] = new JLabel(new ImageIcon(myPicture));
			}
			catch(Exception e){
				photo[i] = new JLabel(new ImageIcon("nopic.jpg"));
			}
            contact[i].add(photo[i]);
			contact[i].add(name[i]);
			contact[i].add(name1[i]);
			contact[i].add(mail[i]);
			contact[i].add(mail1[i]);
			name[i].setText("Name: ");
			mail[i].setText("Mail: ");
			name1[i].setText((next.split("~")[0]));
			mail1[i].setText((next.split("~")[1]));
			name[i].setLabelFor(name1[i]);
			mail[i].setLabelFor(mail1[i]);
			tabedPane.addTab(next.split("~")[0], contact[i]);
			i++;
		}