Need Help with storing and displaying data

[Mitho]

Please help me ...

I had attached three java file passenger, construct passenger and viewer.
In viewer class there is textfield where i can write the passenger name.
My problem and question is that
when i write the passenger name and click on Add Passenger button it should add passenger to certain data file. and it should add some passengers. Finally when i click on Display passenger it should display all passengers name. when i close the program it should save the passenger list.
I had tried to some extend but am unable

Please Help


The viewer classs is

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.BorderLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;


public class Viewer
{

   public static void main(String[] args)
   {
   
      final JFrame frame = new JFrame();
      final int FRAME_WIDTH  = 500;
      final int FRAME_HEIGHT =100;
      frame.setSize(FRAME_WIDTH, FRAME_HEIGHT);
      frame.setTitle("SuperEllipse Viewer");
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frame.setLayout(new BorderLayout());
      final ConsPass pass = new ConsPass();

      final JTextField passenger = new JTextField(15);
      JPanel panel = new JPanel();
      frame.add(panel,BorderLayout.NORTH);
      panel.add(passenger);

      JButton addP = new JButton("Add Passenger");
      JButton printP = new JButton("Display Passenger");
     
      class SuperEllipseListener implements ActionListener
      {
         public void actionPerformed(ActionEvent event)
         {
       
        String p = passenger.getText();
        pass.addPassenger(p);
        passenger.setText(null);
         }            
      }
      ActionListener listener = new SuperEllipseListener();
      addP.addActionListener(listener);
      panel.add(addP);

      class PrintB implements ActionListener
      {
         public void actionPerformed(ActionEvent event)
         {

        	 pass.printP();
         }            
      }
      ActionListener listeners = new PrintB();
      printP.addActionListener(listeners);
      panel.add(printP);
      frame.setVisible(true);
   }
}

The passenger class is

public class Passenger 
{
private String name;


	public Passenger(String sname)
	{
		name=sname;
	}

	public String getName()
	{
		return name;
	}
    

		
}

The constructor class is

import java.util.ArrayList;


public class ConsPass {
	ArrayList<Passenger> passList = new ArrayList<Passenger>();
	Passenger passenger;
	Passenger displaying;
	public ConsPass(){
		
	}
	public void addPassenger(String name)
	{
		for(int i =1; i< passList.size(); i++)
		{
		passenger = new Passenger(name);
		passList.add(passenger);
		}
	}
	public Passenger getPassenger(){
	
		for(int i =1; i< passList.size(); i++)
		{
	       displaying = passList.get(i);
		}
		return displaying;
}
	
	
	public void printP()
	{
		System.out.println(displaying);
	}
}

[Norm]

Can you describe what the program does do?

Where is it not doing what "it should"? Are you missing the code or is the code not doing what you want it to do?

[Mitho]

Program displays textfield and buttons in a JFrame but when i click on add passenger it should stores the information of JTextfield in certain file and should restored when needed....So please help...

[Norm]

it should stores the information of JTextfield in certain file and should restored when needed

Are you asking how to write a String to a disk file and how to read a String from a file?

[Mitho]

HOw to store data and restore it in program

[Norm]

One way to store data and restore it would be to write the data to a disk file where you can later read it.

See the FileWriter class and BufferedReader classes. Do a Search here for those class names for some code samples.