jfilechooser

问题 I have to represent data returned from a file chooser to a chart. Everything works fine until I press the button again and choose a different file. The problem is that instead of representing the new dataset, it's adding it to the previous one. I tried the revalidate , repaint and remove methods, but nothing worked (or I didn't know where to put those methods. My code looks like this: JButton theButton = new JButton("Choose the file"); theButton.addActionListener(new ActionListener() { public

问题 Okay, so I'm trying to make a hex editor, and I'm trying to make a load JMenuItem, but it's not working. The JFileChooser OpenDialog just doesn't show up, and no errors are being shown. import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.*; import java.util.Vector; import java.io.File; import java.io.FileInputStream; import java.io.InputStream; public class HexEditor extends JFrame{ JTextArea textArea; JFileChooser chooser;// = new

问题 I am using JFileChooser and getting file names with Chinese characters in them. JFileChooser displays them properly, and I want to be able to capture these file names and display them back to the user. I have filename: 03 玩愛之徒.mp3 But I end up displaying: 03 ????.mp3 In my code I get... File f1 = fileChooser.getSelectedFile(); log("f1="+ f1.getName()); // gets me 03 ????.mp3 byte[] fname1 = f1.getName().getBytes(); // gets me [B@3f72c47b byte[] fname2 = f1.getName().getBytes("UTF-16"); //

问题 import java.awt.DisplayMode; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFileChooser; import javax.swing.JFrame; import javax.swing.JPanel; public class Sample { public static String audioName; /** * @param args the command line arguments */ public static void main(String[] args) { final JFrame frame = new JFrame(); frame.setTitle("Frame"); frame

问题 I have an installer program that lets the user choose a directory in which to install. The JFileChooser implementation on MacOS uses a native dialog (or at least it looks native). That's great. The only problem is there's no way to create a directory from this dialog ... you can only choose a pre-existing one, which is clunky. Is there a way to get this functionality? I use the JFileChooser in "select directories only" mode. Thus it isn't the same dialog as the usual MacOS file picker which

问题 I use method showOpenDialog of JFileChooser to open file. How to attach ActionListener to Approve button of JFileChooser and how to stop this dialog from closing after Approve button is clicked and listener completed. For now I have : public class MainFileChooser extends JFileChooser { private FileFilter plainFilter; public MainFileChooser() { super.setMultiSelectionEnabled(true); super.setAcceptAllFileFilterUsed(false); plainFilter = new PlainFilter(); } public int showOpenFileDialog() {

问题 I'm looking to make an application that allows you to attach files from your computer. For example, when the JFileChooser opens you have the option to select multiple files and when you click "add" it adds it to the window and you can then have different for what you want to do with those files. Similar to attaching files in an email. All the code I have to show is the JFileChooser because I figure I should learn how to do this before I go any further. Thanks in advance import javax.swing

问题 I need to know which of the 3 is best for me. My requirements are as follows in order of importance: Save and load files with ease. File type filter during file selection (not afterwards). Look and feel is exactly the same as the native OS L&F. If there is a dialog that I've not mentioned that would be more ideal, please let me know. 回答1: What is the rest of your application written in? If you used AWT you should use FileDialog. If you used Swing you should use JFileChooser. Both classes meet

问题 Right now, I have a set class path, but I want to have an open file pop up and the user chooses which file to open. I've tried JFileChooser, but haven't been successful so far. Here's my code: public static void main(String[] args) throws IOException { JFileChooser chooser = new JFileChooser(); int returnValue = chooser.showOpenDialog( null ) ; if( returnValue == JFileChooser.APPROVE_OPTION ) { File file = chooser.getSelectedFile() ; } // I don't want this to be hard-coded: String filePath =

问题 When I click on the button that activates the file chooser, and add the resulting file the panel color disappears. Does anyone know why this is happening? import javax.swing.JPanel; import javax.swing.JButton; import javax.swing.JLabel; import java.awt.Component; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.File; import java.io.IOException; import javax.swing.UIManager; import javax.swing.UnsupportedLookAndFeelException; import javax.swing