I wondered if anyone could help. I am trying to use a FileChooser in java. I have got the dialog box to appear and can select the file, but the box just displays "opening" and the file name. how to I add to the code to make it actually open the text file?

here is my current code:

package org.work;

import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.SwingUtilities;
import javax.swing.filechooser.*;

public class FileChooser extends JFrame
{

    private JTextArea log;
    private JFileChooser fc = new JFileChooser();

    private String newline = System.getProperty("line.separator");

    public FileChooser()
    {
        super("FileChooserDemo");

        JButton openButton = new JButton("Open", new ImageIcon("images/open.gif")); //Create the open button and add image
        openButton.addActionListener(new OpenListener()); //Adds action listener to the open button

        JButton saveButton = new JButton("Save", new ImageIcon("images/save.gif")); //Create the save button and add image
        saveButton.addActionListener(new SaveListener()); //Adds action listener to the save button

        JPanel buttonPanel = new JPanel(); //Create a panel
        buttonPanel.add(openButton); //Add the open button to the panel
        buttonPanel.add(saveButton); //Add the save button to the panel

        log = new JTextArea(5,20); //Create the text area
        log.setMargin(new Insets(5,5,5,5)); //Set the margins
        JScrollPane logScrollPane = new JScrollPane(log);

        Container contentPane = getContentPane();
        contentPane.add(buttonPanel, BorderLayout.NORTH); //Add the buttons to the panel
        contentPane.add(logScrollPane, BorderLayout.CENTER); //Add the text area to the panel
    }

    private class OpenListener implements ActionListener
    {
        public void actionPerformed(ActionEvent e)
        {
            int returnVal = fc.showOpenDialog(FileChooser.this);

            if (returnVal == JFileChooser.APPROVE_OPTION)
            {
                File file = fc.getSelectedFile();

                log.append("Opening: " + file.getName() + "." + newline); //Display "Opening" and the retrieved file name in the text area
            } else //If not;
            {
                log.append("Open command cancelled by user." + newline); //Display this command in the text area
            }
        }
    }

    private class SaveListener implements ActionListener
    {
        public void actionPerformed(ActionEvent e)
        {
            int returnVal = fc.showSaveDialog(FileChooser.this);

            if (returnVal == JFileChooser.APPROVE_OPTION)
            {
                File file = fc.getSelectedFile();

                log.append("Saving: " + file.getName() + "." + newline); //Display "Saving" and the retrieved file name in the text area
            } else //If not;
            {
                log.append("Save command cancelled by user." + newline); //Display this command in the text area
            }
        }
    }

    public static void main(String s[])
    {
        JFrame frame = new FileChooser();

        frame.addWindowListener(new WindowAdapter()
        {
            public void windowClosing(WindowEvent e) {System.exit(0);} //Terminates program
        });

        frame.pack();
        frame.setVisible(true); //Set frame to visible
    }
}

With this code you can read files:

File fileName;
//OR
String fileName;

BufferedReader reader = new BufferedReader(new FileReader(fileName));

String line = reader.readLine();
while (line != null) {
//do whatever you want with the line read.
//perhaps append it to the TextArea.

line = reader.readLine();
}

Is this within the same class? and do you need to import anything else other than these?

import java.io.*;
import java.util.Scanner;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.filechooser.*;

Once you get the file: File file = fc.getSelectedFile(); use the code to read the file's lines.

File file = fc.getSelectedFile();

BufferedReader reader = new BufferedReader(new FileReader(file));

String line = reader.readLine();
while (line != null) {
//do whatever you want with the line read.
//perhaps append it to the TextArea.

line = reader.readLine();
}
reader.close();

Your imports are fine.

Thank You for your help.

I have tried adding that code, but the reader is not found, as they are all underlined, and say "unhandled exception type IOExpection".

I added in "File fileName;" from your first post, but this didn't make a difference.

The errors are:
Exception in thread "AWT-EventQueue-0" java.lang.Error: Unresolved compilation problems:
Unhandled exception type FileNotFoundException
Unhandled exception type IOException
Unhandled exception type IOException
Unhandled exception type IOException

at org.project.FileChooser$OpenListener.actionPerformed(FileChooser.java:54)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

i hope this makes sense. thank you.

Do you know how to catch Exceptions? I assumed that you do.

thanks for your help. its working now

Mark the thread as solved if the issue is resolved.

thanks for your help. its working now

Did you put BufferedReader in a try-catch block? Do you want an example?

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