--- a/jdk/src/share/classes/javax/swing/text/html/parser/Parser.java	Wed Apr 06 11:51:39 2011 +0400
+++ b/jdk/src/share/classes/javax/swing/text/html/parser/Parser.java	Wed Apr 06 12:05:38 2011 +0400
@@ -966,6 +966,9 @@
             char data[] = {'&'};
             return data;
         }
+
+        boolean semicolon = false;
+
         switch (ch) {
           case '\n':
             ln++;
@@ -985,6 +988,8 @@
             break;
 
           case ';':
+            semicolon = true;
+
             ch = readCh();
             break;
         }
@@ -1006,7 +1011,7 @@
                 return new char[0];
             }
             /* given that there is not a match restore the entity reference */
-            String str = "&" + nm + ";";
+            String str = "&" + nm + (semicolon ? ";" : "");
 
             char b[] = new char[str.length()];
             str.getChars(0, b.length, b, 0);

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/javax/swing/text/html/parser/Parser/7003777/bug7003777.java	Wed Apr 06 12:05:38 2011 +0400
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2010, 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 7003777
+   @summary Nonexistent html entities not parsed properly.
+   @author Pavel Porvatov
+*/
+
+import javax.swing.*;
+import javax.swing.text.BadLocationException;
+
+public class bug7003777 {
+    private static final String[] TEST_STRINGS = {
+            "&a",
+            "&aa",
+            "&a;",
+            "&aa;",
+    };
+
+    public static void main(String[] args) throws Exception {
+        SwingUtilities.invokeAndWait(new Runnable() {
+            public void run() {
+                JTextPane pane = new JTextPane();
+
+                pane.setContentType("text/html");
+
+                for (String testString : TEST_STRINGS) {
+                    pane.setText(testString);
+
+                    String parsedText;
+
+                    try {
+                        parsedText = pane.getDocument().getText(0, pane.getDocument().getLength());
+                    } catch (BadLocationException e) {
+                        throw new RuntimeException("The test failed.", e);
+                    }
+
+                    if (parsedText.charAt(0) != '\n') {
+                        throw new RuntimeException("The first char should be \\n");
+                    }
+
+                    parsedText = parsedText.substring(1);
+
+                    if (!testString.equals(parsedText)) {
+                        throw new RuntimeException("The '" + testString +
+                                "' string wasn't parsed correctly. Parsed value is '" + parsedText + "'");
+                    }
+                }
+            }
+        });
+    }
+}