How to make List with all files in folder using swing?

Question

I want to make a list with filename from a folder and show all the files that are present in that folder with a particular extension. I want the list to be selectable so that I can select and delete the file from the list or edit it. I know how to select all files from a folder but don't know how to show it in GUI.

File folder = new File("c:/");
File[] listOfFiles = folder.listFiles();

enter image description here

Why not simply create a JList and add the file names to the list's DefaultListModel? — Hovercraft Full Of Eels, Apr 29 '12 at 16:04
Please see: [Stack Overflow is not your personal research assistant](http://meta.stackexchange.com/a/128553/172496). What may be confusing you is that [Stack Overflow is not like all those other sites](http://meta.stackexchange.com/a/128554/172496) — Brian Roach, Apr 29 '12 at 16:05
For tips see the [File Browser GUI](http://stackoverflow.com/questions/6182110/file-browser-gui). — Andrew Thompson, Apr 29 '12 at 17:00
@Hov Why a `String`? Using `File[]` and a renderer generally works better. — Andrew Thompson, Apr 29 '12 at 17:01
@Andrew: Yep you're right as that gives you much greater freedom on what can be done with the information held by the JList. You would likely want to create your own renderer to that it displays in a pretty way. — Hovercraft Full Of Eels, Apr 29 '12 at 17:34

score 5 · Accepted Answer · edited May 23 '17 at 11:53

5

This example shows how to enumerate the files in a directory and display them in a JToolBar and a JMenu. You can use an Action, such as RecentFile, to encapsulate behavior for use in your ListModel and ListSelectionListener.

edited May 23 '17 at 11:53

Community

1
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answered Apr 29 '12 at 17:49

trashgod

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very helpful for a starter :) – kinkajou Apr 30 '12 at 04:30

score 1 · Answer 2 · answered Apr 29 '12 at 16:10

You get all the file name from folder with extension and construct a string array out of that.Then use a JList to populate in swing.For example something like below

String options = { "apple.exe", "ball.exe" "cat.exe"};
JList optionList = new JList(options);

Hope this will help you.

score 1 · Answer 3 · answered Apr 29 '12 at 17:28

See JFileChooser (shameless copy of the JFileChooser help page):

JFileChooser chooser = new JFileChooser();
FileNameExtensionFilter filter = new FileNameExtensionFilter(
    "JPG & GIF Images", "jpg", "gif");
chooser.setFileFilter(filter);
int returnVal = chooser.showOpenDialog(parent);
if(returnVal == JFileChooser.APPROVE_OPTION) {
   System.out.println("You chose to open this file: " +
        chooser.getSelectedFile().getName());
}

See the FilenameFilter?

setMultiSelectionEnabled (true); is another hint.

Location: java/docs/api/javax/swing/JFileChooser.html

How to make List with all files in folder using swing?

3 Answers3

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