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diff --git a/gcc-4.7/libjava/classpath/examples/gnu/classpath/examples/swing/DocumentFilterDemo.java b/gcc-4.7/libjava/classpath/examples/gnu/classpath/examples/swing/DocumentFilterDemo.java
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+/* DpocumentFilterDemo.java -- An example for the DocumentFilter class.
+   Copyright (C) 2006  Free Software Foundation, Inc.
+
+This file is part of GNU Classpath examples.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+*/
+
+
+package gnu.classpath.examples.swing;
+
+import java.awt.BorderLayout;
+import java.awt.Color;
+import java.awt.GridLayout;
+import java.awt.Toolkit;
+import java.awt.datatransfer.Clipboard;
+import java.awt.datatransfer.StringSelection;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+import javax.swing.JButton;
+import javax.swing.JComboBox;
+import javax.swing.JComponent;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JOptionPane;
+import javax.swing.JPanel;
+import javax.swing.JTextField;
+import javax.swing.SwingUtilities;
+import javax.swing.text.AbstractDocument;
+import javax.swing.text.AttributeSet;
+import javax.swing.text.BadLocationException;
+import javax.swing.text.DocumentFilter;
+
+/**
+ * A demonstration of the <code>javax.swing.text.DocumentFilter</code> class.
+ *
+ * <p>Similar to a dialog in a popular programming IDE the user can insert
+ * a CVS URL into a textfield and the filter will split the components apart
+ * and will put them into the right textfields saving the user a lot of
+ * typing time.</p>
+ *
+ * @author Robert Schuster
+ */
+public class DocumentFilterDemo
+  extends JPanel
+  implements ActionListener
+{
+  JTextField target;
+
+  JTextField host;
+  JTextField repositoryPath;
+  JTextField user;
+  JTextField password;
+  JComboBox connectionType;
+
+  /**
+   * Creates a new demo instance.
+   */
+  public DocumentFilterDemo()
+  {
+    createContent();
+    // initFrameContent() is only called (from main) when running this app
+    // standalone
+  }
+
+  /**
+   * When the demo is run independently, the frame is displayed, so we should
+   * initialise the content panel (including the demo content and a close
+   * button).  But when the demo is run as part of the Swing activity board,
+   * only the demo content panel is used, the frame itself is never displayed,
+   * so we can avoid this step.
+   */
+  void initFrameContent()
+  {
+    JPanel closePanel = new JPanel();
+    JButton closeButton = new JButton("Close");
+    closeButton.setActionCommand("CLOSE");
+    closeButton.addActionListener(this);
+    closePanel.add(closeButton);
+    add(closePanel, BorderLayout.SOUTH);
+  }
+
+  private void createContent()
+  {
+    setLayout(new BorderLayout());
+
+    JPanel panel = new JPanel(new GridLayout(7, 2));
+    panel.add(new JLabel("CVS URL:"));
+    panel.add(target = new JTextField(20));
+    target.setBackground(Color.RED);
+
+    panel.add(new JLabel("Host:"));
+    panel.add(host = new JTextField(20));
+
+    panel.add(new JLabel("Repository Path:"));
+    panel.add(repositoryPath = new JTextField(20));
+
+    panel.add(new JLabel("Username:"));
+    panel.add(user = new JTextField(20));
+
+    panel.add(new JLabel("Password:"));
+    panel.add(password = new JTextField(20));
+
+    panel.add(new JLabel("Connection Type:"));
+    panel.add(connectionType = new JComboBox());
+
+    JButton helpButton = new JButton("Help");
+    panel.add(helpButton);
+
+    helpButton.addActionListener(new ActionListener()
+      {
+        public void actionPerformed(ActionEvent ae)
+        {
+          JOptionPane.showMessageDialog(DocumentFilterDemo.this,
+                                        "Paste a CVS URL into the red " +
+                                        "textfield.\nIf you do not want to " +
+                                        "look up a CVS URL yourself click " +
+                                        "on the 'provide me an example' " +
+                                        "button.\nThis will paste a proper " +
+                                        "string into your clipboard.");
+        }
+      });
+
+    JButton exampleButton = new JButton("Provide me an example!");
+    panel.add(exampleButton);
+    exampleButton.addActionListener(new ActionListener()
+      {
+        public void actionPerformed(ActionEvent ae)
+        {
+         try
+           {
+             Toolkit tk = Toolkit.getDefaultToolkit();
+             Clipboard cb = tk.getSystemSelection();
+             StringSelection selection
+               = new StringSelection(":extssh:gnu@cvs.savannah.gnu.org:" +
+                        "/cvs/example/project");
+
+             cb.setContents(selection, selection);
+
+             // Confirm success with a beep.
+             tk.beep();
+           }
+         catch (IllegalStateException ise)
+           {
+             JOptionPane.showMessageDialog(DocumentFilterDemo.this,
+                                           "Clipboard is currently" +
+                                           " unavailable.",
+                                           "Error",
+                                           JOptionPane.ERROR_MESSAGE);
+           }
+        }
+      });
+
+    connectionType.addItem("pserver");
+    connectionType.addItem("ext");
+    connectionType.addItem("extssh");
+
+    add(panel);
+
+    AbstractDocument doc = (AbstractDocument) target.getDocument();
+    doc.setDocumentFilter(new CVSFilter());
+  }
+
+  public void actionPerformed(ActionEvent e)
+  {
+    if (e.getActionCommand().equals("CLOSE"))
+      System.exit(0);
+
+  }
+
+  public static void main(String[] args)
+  {
+    SwingUtilities.invokeLater
+    (new Runnable()
+     {
+       public void run()
+       {
+         DocumentFilterDemo app = new DocumentFilterDemo();
+         app.initFrameContent();
+         JFrame frame = new JFrame("DocumentFilterDemo");
+         frame.getContentPane().add(app);
+         frame.pack();
+         frame.setVisible(true);
+         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+       }
+     });
+  }
+
+  /**
+   * Returns a DemoFactory that creates a DocumentFilterDemo.
+   *
+   * @return a DemoFactory that creates a DocumentFilterDemo
+   */
+  public static DemoFactory createDemoFactory()
+  {
+    return new DemoFactory()
+    {
+      public JComponent createDemo()
+      {
+        return new DocumentFilterDemo();
+      }
+    };
+  }
+
+  class CVSFilter extends DocumentFilter
+  {
+    // example: pserver:anonymous@cvs.sourceforge.net:/cvsroot/fmj
+    String cvsPattern = ":?(pserver|ext|extssh):(\\w)+(:(\\w)+)?@(\\w|\\.)+:/(\\w|/)*";
+
+    public void insertString(DocumentFilter.FilterBypass fb,
+                             int offset, String string,
+                             AttributeSet attr)
+    throws BadLocationException
+    {
+      filterString(fb, offset, 0, string, attr, true);
+    }
+
+    public void replace(DocumentFilter.FilterBypass fb,
+                              int offset, int length,
+                              String string,
+                              AttributeSet attr)
+    throws BadLocationException
+    {
+      filterString(fb, offset, length, string, attr, false);
+    }
+
+    public void filterString(DocumentFilter.FilterBypass fb,
+                             int offset, int length, String string,
+                             AttributeSet attr, boolean insertion)
+    throws BadLocationException
+    {
+      if(string.matches(cvsPattern))
+        {
+          // Split off the connection type part.
+          String[] result = string.split(":", 2);
+
+          // If the string contained a leading colon, result[0]
+          // will be empty at that point. We simply repeat the split
+          // operation on the remaining string and continue.
+          if(result[0].equals(""))
+            result = result[1].split(":", 2);
+
+          connectionType.setSelectedItem(result[0]);
+
+          // Split off the username and password part
+          result = result[1].split("@", 2);
+
+          // Break username and password in half
+          String[] userCredentials = result[0].split(":");
+          user.setText(userCredentials[0]);
+
+          // If the result has two entries the second one will
+          // be the password.
+          if (userCredentials.length == 2)
+            password.setText(userCredentials[1]);
+
+          // Now break the host part apart.
+          result = result[1].split(":");
+
+          host.setText(result[0]);
+
+          repositoryPath.setText(result[1]);
+        }
+
+      // The unmodified string is put into the document.
+      if (insertion)
+        fb.insertString(offset, string, attr);
+      else
+        fb.replace(offset, length, string, attr);
+    }
+
+  }
+
+}