With this tutorial we are going to see how to set the file selection mode in a file chooser of a Java Desktop Application. This is very useful when you want to search for a specific type of file in your file system.
To select file selection mode in a file chooser in a Java Application you have to:
- Create a new
JFrame. - Create a new
JFileChooserto aFile. - Call
setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY). This will list only directories. - Call
setFileSelectionMode(JFileChooser.FILES_ONLY). This will list only files. - Call
setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES). This will list both files and directories. - Use
showOpenDialogto pop up an Open File Chooser dialog.
Let’s see the code:
package com.javacodegeeks.snippets.desktop;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
public class SelectFileSelectionModeInFileChooser {
private static final long serialVersionUID = 1L;
private static void createAndShowGUI() {
// Create and set up the window.
final JFrame frame = new JFrame("Centered");
// Display the window.
frame.setSize(200, 200);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// set flow layout for the frame
frame.getContentPane().setLayout(new FlowLayout());
JButton button = new JButton("Choose file/directory");
button.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
createFileChooser(frame);
}
});
frame.getContentPane().add(button);
}
private static void createFileChooser(final JFrame frame) {
String filename = File.separator+"tmp";
JFileChooser fileChooser = new JFileChooser(new File(filename));
fileChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY); // only directories
// fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY); // only files
// fileChooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES); // both files and directories
// pop up an "Open File" file chooser dialog
fileChooser.showOpenDialog(frame);
System.out.println("File to open: " + fileChooser.getSelectedFile());
}
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}This was an example on how to select file selection mode in file chooser.
