--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/javax/swing/text/html/HTMLEditorKit/4242228/bug4242228.java	Thu May 17 15:41:09 2012 +0400
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/* @test
+   @bug 4242228
+   @summary Tests that HTMLEditorKit.setText() doesn't throw exceptions
+   @author Peter Zhelezniakov
+*/
+
+import sun.awt.SunToolkit;
+
+import javax.swing.*;
+import javax.swing.event.ChangeEvent;
+import javax.swing.event.ChangeListener;
+import javax.swing.text.StyledEditorKit;
+import javax.swing.text.html.HTMLDocument;
+import javax.swing.text.html.HTMLEditorKit;
+import java.awt.*;
+
+public class bug4242228 {
+    private static JTabbedPane tabPane;
+    private static JFrame frame;
+
+    public static void main(String[] argv) throws Exception {
+        SwingUtilities.invokeAndWait(new Runnable() {
+            @Override
+            public void run() {
+                frame = new JFrame("4242228 Test");
+
+                JScrollPane sourcePane = new JScrollPane();
+                final JTextPane htmlEditor = new JTextPane();
+                final JTextPane sourceEditor = new JTextPane();
+                final JScrollPane editorPane = new JScrollPane();
+
+                tabPane = new JTabbedPane();
+                htmlEditor.setText(" ");
+                htmlEditor.setEditorKit(new HTMLEditorKit());
+
+                sourceEditor.setText(" ");
+                sourceEditor.setEditorKit(new StyledEditorKit());
+
+                frame.setLayout(new BorderLayout());
+
+                editorPane.getViewport().add(htmlEditor);
+
+                tabPane.addTab("Editor", editorPane);
+                tabPane.addChangeListener(new ChangeListener() {
+                    public void stateChanged(ChangeEvent e) {
+                        if (tabPane.getSelectedComponent() == editorPane) {
+                            htmlEditor.setText(sourceEditor.getText());
+                        } else {
+                            sourceEditor.setText(htmlEditor.getText());
+                        }
+                    }
+                });
+
+                sourcePane.getViewport().add(sourceEditor);
+                tabPane.addTab("Source", sourcePane);
+                tabPane.setTabPlacement(SwingConstants.BOTTOM);
+                htmlEditor.setDocument(new HTMLDocument());
+
+                frame.add(tabPane);
+                frame.setSize(400, 300);
+                frame.setVisible(true);
+            }
+        });
+
+        ((SunToolkit) Toolkit.getDefaultToolkit()).realSync();
+
+        SwingUtilities.invokeAndWait(new Runnable() {
+            @Override
+            public void run() {
+                for (int i = 0; i < 50; i++) {
+                    tabPane.setSelectedIndex(i % 2);
+                }
+
+                frame.dispose();
+            }
+        });
+    }
+}