[cachi]

Hi, I am having problems with a program i am making the program coding is

Code:

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.util.ArrayList;
import java.util.List;

public class Contacts implements ActionListener {
	JFrame contactsFrame;
    JPanel contactsPanel;
    JTextField name, lname, phonenum;
    JLabel names, lnames, phonenums;
    JButton next, back, add, edit, save;
    List data = new ArrayList();
    int a=0, b=0;
    
        public Contacts() {
        //Create and set up the window.
        contactsFrame = new JFrame("Contacts Manager Program");
        contactsFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        contactsFrame.setSize(3020, 40);

        //Create and set up the panel.
        contactsPanel = new JPanel(new GridLayout(5, 2));

        //Add the widgets.
        addWidgets();

        //Add the panel to the window.
        contactsFrame.getContentPane().add(contactsPanel, BorderLayout.CENTER);

        //Display the window.
        contactsFrame.pack();
        contactsFrame.setVisible(true);
    }
    
    private void addWidgets() {
        //Create widgets.
        name = new JTextField(data.get(0));
        lname = new JTextField(data.get(1));
        phonenum = new JTextField(data.get(2));
        names = new JLabel("Name:");
        lnames = new JLabel("Last Name:");
        phonenums = new JLabel("Phone Number:");
        next = new JButton("Next");
        back = new JButton("Back");
        add = new JButton("Add new Contact");
        edit = new JButton("Save Changes");

        //Listen to events from the Convert button.
        next.addActionListener(this);
        back.addActionListener(this);
        add.addActionListener(this);

        //Add the widgets to the container.
        contactsPanel.add(names);
        contactsPanel.add(name);
        contactsPanel.add(lnames);
        contactsPanel.add(lname);
        contactsPanel.add(phonenums);
        contactsPanel.add(phonenum);
        contactsPanel.add(back);
        contactsPanel.add(next);
        contactsPanel.add(add);
        contactsPanel.add(edit);
    }
    
    
	public void actionPerformed(ActionEvent event) {
		if(event.getSource()==add) {
    	data.add(name.getText());
    	data.add(lname.getText());
    	data.add(phonenum.getText());
    	b=b+3;
    	}
    	if(event.getSource()==next) {
    		if (a!=b) {
    			a=a+3;
    	}
    	name.setText(data.get(a));
    	lname.setText(data.get(a+1));
    	phonenum.setText(data.get(a+2));
    	}
    	if(event.getSource()==back) {
    		if(a!=0){
    			a=a-3;
    		}
    	name.setText(data.get(a));
    	lname.setText(data.get(a+1));
    	phonenum.setText(data.get(a+2));
    	}
    	//if(event.getSource()==edit) {
    	//data[a]=name.getText();
		//data[a+1]=lname.getText();
		//data[a+2]=phonenum.getText();
		//data2[a]=name.getText();
		//data2[a+1]=lname.getText();
		//data2[a+2]=phonenum.getText();
    	//}
		}
	
	
    private static void createAndShowGUI() {
        //Make sure we have nice window decorations.
        JFrame.setDefaultLookAndFeelDecorated(true);

        Contacts converter = new Contacts();
    }

    public void main(String[] args)
    throws Exception
    {
        //Schedule a job for the event-dispatching thread:
        //creating and showing this application's GUI.
        read();
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }
    public void write()
    throws Exception
    {
	
    }
    public void read()
    throws Exception
    {
    	data = new ArrayList();
    	BufferedReader reader= new BufferedReader(new FileReader("foo.txt"));
		String textline = null;
		while((textline = reader.readLine()) != null){
		data.add(textline);
		b++;
		}
		reader.close();
    }
}

The problems i am having with are

Code:

E:\Contacts.java:39: cannot resolve symbol
symbol  : constructor JTextField (java.lang.Object)
location: class javax.swing.JTextField
        name = new JTextField(data.get(0));
               ^
E:\Contacts.java:40: cannot resolve symbol
symbol  : constructor JTextField (java.lang.Object)
location: class javax.swing.JTextField
        lname = new JTextField(data.get(1));
                ^
E:\Contacts.java:41: cannot resolve symbol
symbol  : constructor JTextField (java.lang.Object)
location: class javax.swing.JTextField
        phonenum = new JTextField(data.get(2));
                   ^
E:\Contacts.java:80: setText(java.lang.String) in javax.swing.text.JTextComponent cannot be applied to (java.lang.Object)
        name.setText(data.get(a));
            ^
E:\Contacts.java:81: setText(java.lang.String) in javax.swing.text.JTextComponent cannot be applied to (java.lang.Object)
        lname.setText(data.get(a+1));
             ^
E:\Contacts.java:82: setText(java.lang.String) in javax.swing.text.JTextComponent cannot be applied to (java.lang.Object)
        phonenum.setText(data.get(a+2));
                ^
E:\Contacts.java:88: setText(java.lang.String) in javax.swing.text.JTextComponent cannot be applied to (java.lang.Object)
        name.setText(data.get(a));
            ^
E:\Contacts.java:89: setText(java.lang.String) in javax.swing.text.JTextComponent cannot be applied to (java.lang.Object)
        lname.setText(data.get(a+1));
             ^
E:\Contacts.java:90: setText(java.lang.String) in javax.swing.text.JTextComponent cannot be applied to (java.lang.Object)
        phonenum.setText(data.get(a+2));
                ^

Thanks.