--- a/langtools/src/share/classes/com/sun/tools/javac/tree/Pretty.java	Fri Jan 08 11:16:23 2010 -0800
+++ b/langtools/src/share/classes/com/sun/tools/javac/tree/Pretty.java	Fri Jan 08 11:28:49 2010 -0800
@@ -468,6 +468,10 @@
                 print(" throws ");
                 printExprs(tree.thrown);
             }
+            if (tree.defaultValue != null) {
+                print(" default ");
+                printExpr(tree.defaultValue);
+            }
             if (tree.body != null) {
                 print(" ");
                 printStat(tree.body);

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/T6665791.java	Fri Jan 08 11:28:49 2010 -0800
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2010 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 6665791
+ * @summary com.sun.source.tree.MethodTree.toString() does not output default values
+ */
+
+import java.io.File;
+import java.io.IOException;
+import java.io.StringWriter;
+import javax.tools.JavaCompiler;
+import javax.tools.JavaFileObject;
+import javax.tools.StandardJavaFileManager;
+import javax.tools.ToolProvider;
+import com.sun.source.tree.ClassTree;
+import com.sun.source.util.JavacTask;
+import com.sun.source.util.TreeScanner;
+import java.io.FileWriter;
+
+public class T6665791 {
+    static String test = "public @interface Annotation { boolean booleanProperty() default false; }";
+    static File test_java = new File("Test.java");
+
+    public static void main(String[] args) throws Exception {
+        write(test_java, test);
+
+        JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
+        StandardJavaFileManager manager =
+                compiler.getStandardFileManager(null, null, null);
+        Iterable<? extends JavaFileObject> units = manager.getJavaFileObjects(test_java);
+        final StringWriter sw = new StringWriter();
+        JavacTask task = (JavacTask) compiler.getTask(sw, manager, null, null,
+                null, units);
+
+        new TreeScanner<Boolean, Void>() {
+            @Override
+            public Boolean visitClass(ClassTree arg0, Void arg1) {
+                sw.write(arg0.toString());
+                return super.visitClass(arg0, arg1);
+            }
+        }.scan(task.parse(), null);
+
+        System.out.println("output:");
+        System.out.println(sw.toString());
+        String found = sw.toString().replaceAll("\\s+", " ").trim();
+        String expect = test.replaceAll("\\s+", " ").trim();
+        if (!expect.equals(found)) {
+            System.out.println("expect: " + expect);
+            System.out.println("found:  " + found);
+            throw new Exception("unexpected output");
+        }
+    }
+
+    static void write(File file, String body) throws IOException {
+        FileWriter out = new FileWriter(file);
+        out.write(body);
+        out.close();
+    }
+}