Solved

JFileChooser validating file

Posted on 2007-11-29
4
2,339 Views
Last Modified: 2008-02-01
Using a JFileChooser with, eg,  *.txt, only in the files of type dropdown. the suier can then type *.ini in the File name text box and then open any ini file. See code sample below.

How can I only allow a certain file (*.txt in this example) to be opened, ie. this dialog not close unless a .txt file selected or the dialog is cancelled?

Thanks, Tom.
JFileChooser fileChooser = new JFileChooser(); 
			int returnValue = JFileChooser.CANCEL_OPTION;
			fileChooser.setDialogTitle("Open");
			fileChooser.setAcceptAllFileFilterUsed(false);
			fileChooser.setFileFilter(new FileFilter() {
				public boolean accept(File file) {
					String fileName = file.getName().toUpperCase();
					if (fileName.endsWith("*.txt")) {
						return true;
					}
					return false;
				}
	
				public String getDescription() {
					return "Text file (*.txt)";
				}
			});
				
			returnValue = fileChooser.showOpenDialog(parent);

Open in new window

0
Comment
Question by:tomcorcoran
  • 2
4 Comments
 
LVL 92

Expert Comment

by:objects
ID: 20373116
you could check the file returned and re-pop it up if not correct type.
0
 

Author Comment

by:tomcorcoran
ID: 20373604
of course one can do that. I am looking for a solution where the file selected can be validated prior to the file chooser being closed...
0
 
LVL 24

Accepted Solution

by:
sciuriware earned 50 total points
ID: 20373876
Then you have to open the source and write your own sub-version.
The source can be found as src.zip in the JDK distibution.

;JOOP!
0
 

Author Comment

by:tomcorcoran
ID: 20374033
Ok. I am used to the Delphi community where lots of source is freely available, I have been surprised with my experiences in java so far that though free everyone keeps reinventing the wheel rather than using well oiled code...but maybe I have not been given the keys to the community yet, certainly delphi's is not exclusive....anyway....for such an obvious problem i'm amazed there is not a ready made solution....
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Java contains several comparison operators (e.g., <, <=, >, >=, ==, !=) that allow you to compare primitive values. However, these operators cannot be used to compare the contents of objects. Interface Comparable is used to allow objects of a cl…
Introduction This article is the first of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article explains our test automation goals. Then rationale is given for the tools we use to a…
Viewers learn about the scanner class in this video and are introduced to receiving user input for their programs. Additionally, objects, conditional statements, and loops are used to help reinforce the concepts. Introduce Scanner class: Importing…
Viewers will learn about the different types of variables in Java and how to declare them. Decide the type of variable desired: Put the keyword corresponding to the type of variable in front of the variable name: Use the equal sign to assign a v…

685 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question