Need help with getting gui working

Review your flavorsChanged method and try this :

package test;

import java.awt.datatransfer.Clipboard;

import java.awt.datatransfer.FlavorEvent;

import java.awt.datatransfer.FlavorListener;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.beans.PropertyChangeEvent;

import java.beans.PropertyChangeListener;

import javax.swing.*;

import java.awt.event.*;

import javax.swing.AbstractAction;

import javax.swing.JFileChooser;

import java.awt.Component;

import java.awt.FileDialog;

import java.awt.KeyboardFocusManager;

import java.awt.Toolkit;

import java.awt.image.*;

import java.io.File;

import java.io.FileFilter;

import java.util.List;

import java.util.ArrayList;

import java.util.Iterator;

import javax.swing.event.ListSelectionEvent;

import javax.swing.event.ListSelectionListener;

class MenuExp extends JFrame {

private Object DataFlavor;

public MenuExp() {

setTitle("Menu Example");

setSize(400, 300);

// Creates a menubar for a JFrame

JMenuBar menuBar = new JMenuBar();

// Add the menubar to the frame

setJMenuBar(menuBar);

// Define and add two drop down menu to the menubar

JMenu fileMenu = new JMenu("File");

JMenu editMenu = new JMenu("Edit");

menuBar.add(fileMenu);

menuBar.add(editMenu);

// Create and add simple menu item to one of the drop down menu

JMenuItem newAction = new JMenuItem("New");

JMenuItem openAction = new JMenuItem("Open");

JMenuItem saveAction = new JMenuItem("Save");

JMenuItem exitAction = new JMenuItem("Exit");

JMenuItem cutAction = new JMenuItem("Cut");

JMenuItem copyAction = new JMenuItem("Copy");

JMenuItem pasteAction = new JMenuItem("Paste");

ButtonGroup bg = new ButtonGroup();

fileMenu.add(newAction);

fileMenu.add(openAction);

fileMenu.add(saveAction);

fileMenu.addSeparator();

fileMenu.add(exitAction);

editMenu.add(cutAction);

editMenu.add(copyAction);

editMenu.add(pasteAction);

// Add a listener to the New menu item. actionPerformed() method will

// invoked, if user triggred this menu item

exitAction.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent arg0) {

exit();

}

});

openAction.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent arg0) {

open();

}

});

cutAction.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent arg0) {

cut();

}

});

pasteAction.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent arg0) {

paste();

}

});

PropertyChangeListener focusListener = new PropertyChangeListener() {

public void propertyChange(PropertyChangeEvent arg0) {

if (arg0.getPropertyName() == "permanentFocusOwner") {

// The permanent focus owner has changed.

}

}

};

KeyboardFocusManager.getCurrentKeyboardFocusManager().addPropertyChangeListener(focusListener);

}

public static void MenuExp(String[] args) {

MenuExp me = new MenuExp();

me.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

me.setVisible(true);

}

private void exit() {

System.exit(0);

}

private void cut() {

}

public void open() {

MenuExp fileChooser = new MenuExp();

JFileChooser fc = new JFileChooser();

javax.swing.filechooser.FileFilter filter = new CustomFileFilter();

fc.setFileFilter(filter);

// int returnVal = fc.showOpenDialog(parent);

fc.showOpenDialog(fileChooser);

}

class CustomFileFilter extends javax.swing.filechooser.FileFilter {

public boolean accept(File file) {

return file != null && file.isFile() && file.getName().toUpperCase().endsWith(".TXT");

}

@Override

public String getDescription() {

return null;

}

}

private void paste() {

FlavorListener flavorListener = new FlavorListener() {

public void flavorsChanged(FlavorEvent arg0) {

flavorsChanged(arg0);

}

};

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();

clipboard.addFlavorListener(flavorListener);

}

/*private void flavorsChanged() {

Object PASSWORD_ENTRY_DATA_FLAVOR;

Object entryList;

CutCopyPasteHelper.registerDataFlavors(component, DataFlavor);

entryList.setTransferHandler(new ListTransferHandler());

CutCopyPasteHelper.registerCutCopyPasteBindings(entryList, true);

CutCopyPasteHelper.registerDataFlavors(entryList, PASSWORD_ENTRY_DATA_FLAVOR);

CutCopyPasteHelper.setPasteEnabled(entryList, true);

ListSelectionListener selectionListener = new ListSelectionListener() {

public void valueChanged(ListSelectionEvent arg0) {

if (!arg0.getValueIsAdjusting()) {

boolean hasSelection = (entryList.getMinSelectionIndex() != -1);

CutCopyPasteHelper.setCopyEnabled(entryList, hasSelection);

CutCopyPasteHelper.setCutEnabled(entryList, hasSelection);

entryList.addListSelectionListener(new ListSelectionHandler());

}

}

};

}*/

public void newPermanentFocusOwner(Component component) {

throw new UnsupportedOperationException("Not yet implemented");

}

}

java_2006a at 2007-7-12 2:57:05 >