--- a/jdk/src/share/classes/java/text/SimpleDateFormat.java	Thu Jun 25 00:18:46 2009 -0700
+++ b/jdk/src/share/classes/java/text/SimpleDateFormat.java	Thu Jun 25 02:42:26 2009 -0700
@@ -1030,9 +1030,9 @@
 
         case 1: // 'y' - YEAR
             if (calendar instanceof GregorianCalendar) {
-                if (count >= 4)
+                if (count != 2)
                     zeroPaddingNumber(value, count, maxIntCount, buffer);
-                else // count < 4
+                else // count == 2
                     zeroPaddingNumber(value, 2, 2, buffer); // clip 1996 to 96
             } else {
                 if (current == null) {

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/text/Format/DateFormat/Bug6609750.java	Thu Jun 25 02:42:26 2009 -0700
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2009 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/**
+ * @test
+ * @bug 6609750
+ * @summary Make sure that SimpleDateFormat.format() formats years correctly.
+ */
+import java.text.*;
+import java.util.*;
+
+public class Bug6609750 {
+
+    public static void main(String[] args) {
+        boolean error = false;
+
+        Locale defaultLocale = Locale.getDefault();
+        Locale.setDefault(Locale.US);
+
+        Date[] dates = {
+            new Date(9-1900,     Calendar.JUNE, 12),
+            new Date(99-1900,    Calendar.JUNE, 12),
+            new Date(999-1900,   Calendar.JUNE, 12),
+            new Date(2009-1900,  Calendar.JUNE, 12),
+            new Date(30009-1900, Calendar.JUNE, 12),
+        };
+
+        String[] patterns = {
+           "y", "yy", "yyy", "yyyy", "yyyyy", "yyyyyy"
+        };
+        String[][] expectedResults = {
+           {"9",     "09", "009",   "0009",  "00009", "000009"},
+           {"99",    "99", "099",   "0099",  "00099", "000099"},
+           {"999",   "99", "999",   "0999",  "00999", "000999"},
+           {"2009",  "09", "2009",  "2009",  "02009", "002009"},
+           {"30009", "09", "30009", "30009", "30009", "030009"},
+        };
+
+        SimpleDateFormat sdf = new SimpleDateFormat();
+        for (int dateNo = 0; dateNo < dates.length; dateNo++) {
+            Date date = dates[dateNo];
+            for (int patternNo = 0; patternNo < patterns.length; patternNo++) {
+                sdf.applyPattern(patterns[patternNo]);
+                String got = sdf.format(date);
+                if (!expectedResults[dateNo][patternNo].equals(got)) {
+                    error = true;
+                    System.err.println("Failed: Unexpected format result: " +
+                        "Expected: \"" + expectedResults[dateNo][patternNo] +
+                        "\", Got: \"" + got + "\" for date " + date +
+                        " with pattern \"" + patterns[patternNo] + "\"");
+                }
+            }
+        }
+
+        Locale.setDefault(defaultLocale);
+        if (error) {
+            throw new RuntimeException("SimpleDateFormat.format() error.");
+        };
+    }
+
+}