Save in JFileChooser question

Hello everyone ...
I have a problem that has many answers on this site, but i cannot understand them (damn newbie me ! :)) ).
I use a JFileChooser to save a file and I want the extension of the file to be automatically appended to the filename. I use a filter for viewing files but i don't know how can I use a filter to save the files.
Thanks in advance,
Dan

class MyExtensionFilter extends FileFilter {
String myExtension = "";
public MyExtensionFilter(String myExtension) {
this.myExtension = myExtension;
public boolean accept(File file) {
return file.getName().endWith(myExtension);
public string getDescription() {
return myExtension;
File chosenFile = myFileChooser.getSelectedFile();
chosenFile = newFile(chosenFile.getAbsolutePath() + myFileFilter.getDescription();

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Save As operation Question

Scenario - I have a web application that generates Excel documents that can be downloaded or opened directly. The web pages are a mixture of both ASP.NET and Classic ASP so the Excel file is actually generated as an HTML table. When a Save or Save As operation
is done when the .xls file is downloaded a specified file name passed from the web page is used in the save operation. When you open the Excel file after saving Excel displays "The file you are trying to open "filename.xls" is in a different
format than specified by the file extension...Do you want to open the file now?" informing me that the file is not a true xls file. When you continue with the opening the file it opens normally with no issues.
Question or Possible issue: Taking one of these files after it has been saved to a location on the computer outside of the download folder, and perform a Save As operation to change the format to a true .xls file the theExisting File Name is not displayed in
the File Name field. The Save as type defaults to Web Page which is understandable due to how the file is generated.
I've tried this with actual Excel spreadsheets and the File Name field on the Save As operation is populated with the current name of the file and keeps it even if you change the Save as type.
Main Question: Is there a setting somewhere in Excel to prevent the loss of the File Name?

Hi,
According to your description, the "The file you are trying to open "filename.xls" alert is from a feature called Extension Hardening, and you can find more information about it here.
http://blogs.msdn.com/b/vsofficedeveloper/archive/2008/03/11/excel-2007-extension-warning.aspx
As you said and tested, Excel will retain the current file name in file name field when we save/save as the file. It's a default behavior. I suppose that the issue may be caused by the Excel that generated by web application.
I recommend we try the 3 workarounds:
1. Modify the ASP.NET program and make the file change to new excel format when generated
Please see the thread:
http://stackoverflow.com/questions/940045/how-to-suppress-the-file-corrupt-warning-at-excel-download
2. Use "Office Migration Planning Manager" to convert the XLS to XLSX format.
The toolkit also contains the Office File Converter (OFC), which enables bulk document conversions from binary to OpenXML formats.
Overview on Technet
Download Link
3. Use a macro to convert batch of XLS file to XLSX file and retain the file name.
Sample code:
Sub ProcessFiles()
Dim Filename, Pathname, saveFileName As String
Dim wb As Workbook
Pathname = "C:\Users\myfolder1\Desktop\myfolder\Macro\"
Filename = Dir(Pathname & "*.xls")
Do While Filename <> ""
Set wb = Workbooks.Open(Pathname & Filename)
saveFilename = Replace(Filename, ".xlsx", ".xls")
wb.SaveAs Filename:=Pathname & saveFilename, _
FileFormat:=xlExcel8, Password:="", WriteResPassword:="", _
ReadOnlyRecommended:=False, CreateBackup:=False
wb.Close SaveChanges:=False
Filename = Dir()
Loop
End Sub
Regards,
George Zhao
TechNet Community Support
It's recommended to download and install
Configuration Analyzer Tool (OffCAT), which is developed by Microsoft Support teams. Once the tool is installed, you can run it at any time to scan for hundreds of known issues in Office
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Save and delete question

How to find out if there are other related records in another table.
If there are other related record then delete is not allowed.
For eample, Order has many items in it. 2 tables -Order Table and OrderItem table - one to many relationship.
Then Can't delete a record in the order table if there are related record in the OrderItem table.
I have 3 text fields. Enter data in it and then press the save button.
It will save it to the database.
how to force people to enter the data.
That is, if they press save and if any of the 3 text fields is empty then
show a message box saying need to fill in all text fields.
How to find out if the text field is empty?
How to save to multiple tables.
That is, how to save the master table first then the detail tabes.
For example, there is a order table and a orderItem table.
When save button is clicked. must save to Order table first then to
orderItem table.
How to find out if the user is saving the data and that data already
exists in database. So this is wrong. Can't have duplicate data.
----------------------------------------------

For ur first question:
use the transction to delete.if u found any of the conditions u mention rollback.seee the Connection class in jdbc API.normally its AtuoCommint true.so before starting transction setAutoCommit fasle.
second question:
in the saveButton action performed first check the textField.getText().equals("") for all the 3 textfields.if the condtions doesnt met popup optionpane.showdialog();
if met just save it.
3 rd question answer:
this also same like first question.try to save in transaction.if anything happens wrong everything will be rollbacked.
4th question:
use unique in sql .u can set the 1 r more columns in table as unique key.
for all these to work ur database shud support transactions....

JFileChooser question

Hey Guys,
My First post on the sun forums, so a big hello to you guys. I have a question in relation to best practice in querying something in one user interface, of another user interface. Suppose i have a class that consists on a TextField,JButton, and a JButton which opens a JFileChooser; i would like to return the value of the JTextField from the second GUI class to a calling gui class (gui1), once the OK button has been pressed. The second gui class consists of the following.
package UserInterface;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
Class that allows for a local file to be chosen
@author pthug
public class ImageChooser extends JFrame {
private JButton okButton;
private JButton chooseFileButton;
private JTextField locationTextField;
private JPanel mainPanel;
private JPanel locationPanel;
private JFileChooser fc;
private String address;
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super("Image Chooser");
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setSize(new Dimension(450,250));
setResizable(false);
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initComponents();
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mainPanel.setLayout(new BoxLayout(mainPanel, BoxLayout.PAGE_AXIS));
locationPanel.setLayout(new FlowLayout());
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addComponents();
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pack();
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setLocationRelativeTo(null);
//close frame as default operation
setDefaultCloseOperation(DISPOSE_ON_CLOSE);
//add action listeners to components
createActionListeners();
//show frame
setVisible(true);
//*adds all components*
*private void addComponents() {*
*locationPanel.add(locationTextField);*
*locationPanel.add(chooseFileButton);*
*mainPanel.add(locationPanel);*
*mainPanel.add(okButton);*
*this.add(mainPanel);*
*//*create the components for interface
private void initComponents() {
okButton = new JButton("OK");
chooseFileButton = new JButton("...");
locationTextField = new JTextField(50);
mainPanel = new JPanel();
locationPanel = new JPanel();
fc = new JFileChooser();
address = new String("");
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@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if (e.getSource() == chooseFileButton) {
int returnVal = fc.showOpenDialog(ImageChooser.this);
if (returnVal == JFileChooser.APPROVE_OPTION) {
File file = fc.getSelectedFile();
locationTextField.setText(file.getPath());
} else {
System.out.println("Open command cancelled by user." + "\n");
//ok button action listener
okButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
address = locationTextField.getText();
//some more methods that determine if a web address has been typed in the JTextField or whether a
//local file has been chosen using the JFileChooser which has not been written yet
//@param args
public static void main(String[] args) {
ImageChooser co = new ImageChooser();
}and a call the class from a the first gui class as such
GUI 1
addImageItem.addActionListener(new ActionListener() {
             @Override
                  public void actionPerformed(ActionEvent arg0) {
                       imageChooser = new ImageChooser();
... remaining source of class remove as its not necessary to the questionhow can i query when the ok button has been pressed on the second gui class, so that the first gui knows when to take the value from the JTextField. Would i just put a method in the second gui which is a boolean that holds true or false whether its ok to take the value from the JTextField and query it like such...
//                       while(imageChooser.isStillOpen()) {
//                       }Hope that makes sense.
Regards,
KevJ
Edited by: KevJ on 10-Nov-2009 17:05

Thank you for your reply bharath.bravo, that has solved my question. Which i did as such, i provided a method in the second GUI class to enable me to add an ActionListener to the OK button. As such
      * this method allows other classes to add their action listeners to
      * the OK Button
      * @param e Action Listener from another class
     public void addActionToOKButton(ActionListener e) {
          okButton.addActionListener(e);
     }     I then added a accessor method, to get the value from the textfield; which i've implemented it as such:
imageChooser.addActionToOKButton(new ActionListener() {
                              @Override
                              public void actionPerformed(ActionEvent arg0) {
                                                                                                                //use imageChooser accessor method to get the value from the text field
                                   imageLocation = imageChooser.getLocationTextField();
                                                                                                                //DEBUG statement
                                   System.out.println("gui one recieved: " + imageLocation);
                                                                                                                //get rid of imageChooser window
                                   imageChooser.dispose();
                              }For the sake of clarity, in your first suggestion. You mentioned that i could implement the WindowListener Interface in the first gui, and add it as a Listener to the second gui. Would i do that like this, and what would be a prefferable way of doing this out of the two methods you suggested.
public class GUI extends JFrame implements WindowListener
     @Override
     public void windowClosed(WindowEvent arg0) {
          // TODO Auto-generated method stub
          //get value of jTextField using its public accessor method
add window listener to second gui, from the first GUI
imageChooser.addWindowListener(this);Regards,
KevinJ
Edited by: KevJ on 11-Nov-2009 14:38

JFileChooser Questions

Hi,
I have 2 questions concerning the use of JFileChooser:
1. When you use "Details" option to see the details of the files; the "Modified" column seems to show the time in "United States" format even if the local regional setting is something else. Is this the default behavior of the JFileChooser or is there something that I can do to change that?
2. It seems that you cannot just click on the column headers such as "Modified" to have the files sorted by that column like real Window's file chooser... Is that also the default behavior or is there something that I can do to change that?
Thanks....

you can read this
http://java.sun.com/docs/books/tutorial/uiswing/components/filechooser.html
to know all the subtilities fo the JFileChooser

JFileChooser Question .... wo hoo!

Hey there,
I have a question regarding the JFileChooser class. I have managed to instantiate a file chooser and specify that it display directories only, I have also worked out how to get information when the "Attach" button (my custom button) or the "cancel" button is pressed. When the "Attach" button is pressed I return a file object that selects the user selected directory. I then print the directory to the standard output. Unfortunately the entire selection is not being printed, only the top level directory relevant to the selection is being printed. If you are familiar with JFileChooser then you will probably know what it looks like when it is instantiated. To refresh a couple of areas of significance to my program are the "Look in:" section and the "File Name:" section.
I need my program to print the inforamtion in the "File Name:" section not the "Look in:" section as it is doing now. My code is as follows:
import java.awt.event.*;
import java.io.*;
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                                //because this object is used in an inner class.
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public static void main(String args[])
    JFrame frame = new TestChooser();
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}I have noticed that the "File Name:" section has a Key Mnemonic of N so maybe that can be used in the actionListener, I'm just not sure how. If anybody can help me with retrieving the information from the "File Name:" section as opposed to the "Look in:" section it will be greatly appreciated.
Regards
Davo

<snip>
File curDirectY = fC.getCurrentDirectory();The above method is the wrong method to call. It returns the directory that the JFileChooser itself is pointing at. It knows nothing about what file or directory may have been selected. Use the getSelectedFile() method instead.
Jim S.

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Joyce,
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I think you need to turn this on its head.
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tell application "SketchBook Express" to quit saving no
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This is a standard shell command, so you don't need AppleScript (or osascript) to run it. If you do want to wrap this in a larger script, just use 'do shell script':
do shell script "killall SketchBookExpress"

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Save in JFileChooser question

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