diff -r 000000000000 -r 959103a6100f src/share/classes/com/sun/tools/doclets/internal/toolkit/util/ImplementedMethods.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/classes/com/sun/tools/doclets/internal/toolkit/util/ImplementedMethods.java	Wed Apr 27 01:34:52 2016 +0800
@@ -0,0 +1,151 @@
+/*
+ * Copyright (c) 1999, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+
+package com.sun.tools.doclets.internal.toolkit.util;
+
+import java.util.*;
+
+import com.sun.javadoc.*;
+import com.sun.tools.doclets.internal.toolkit.Configuration;
+
+/**
+ * For a given class method, build an array of interface methods which it
+ * implements.
+ *
+ *  <p><b>This is NOT part of any supported API.
+ *  If you write code that depends on this, you do so at your own risk.
+ *  This code and its internal interfaces are subject to change or
+ *  deletion without notice.</b>
+ *
+ * @author Atul M Dambalkar
+ */
+public class ImplementedMethods {
+
+    private Map<MethodDoc,Type> interfaces = new HashMap<MethodDoc,Type>();
+    private List<MethodDoc> methlist = new ArrayList<MethodDoc>();
+    private Configuration configuration;
+    private final ClassDoc classdoc;
+    private final MethodDoc method;
+
+    public ImplementedMethods(MethodDoc method, Configuration configuration) {
+        this.method = method;
+        this.configuration = configuration;
+        classdoc = method.containingClass();
+    }
+
+    /**
+     * Return the array of interface methods which the method passed in the
+     * constructor is implementing. The search/build order is as follows:
+     * <pre>
+     * 1. Search in all the immediate interfaces which this method's class is
+     *    implementing. Do it recursively for the superinterfaces as well.
+     * 2. Traverse all the superclasses and search recursively in the
+     *    interfaces which those superclasses implement.
+     *</pre>
+     *
+     * @return MethodDoc[] Array of implemented methods.
+     */
+    public MethodDoc[] build(boolean sort) {
+        buildImplementedMethodList(sort);
+        return methlist.toArray(new MethodDoc[methlist.size()]);
+    }
+
+    public MethodDoc[] build() {
+        return build(true);
+    }
+
+    public Type getMethodHolder(MethodDoc methodDoc) {
+        return interfaces.get(methodDoc);
+    }
+
+    /**
+     * Search for the method in the array of interfaces. If found check if it is
+     * overridden by any other subinterface method which this class
+     * implements. If it is not overidden, add it in the method list.
+     * Do this recursively for all the extended interfaces for each interface
+     * from the array passed.
+     */
+    private void buildImplementedMethodList(boolean sort) {
+        List<Type> intfacs = Util.getAllInterfaces(classdoc, configuration, sort);
+        for (Iterator<Type> iter = intfacs.iterator(); iter.hasNext(); ) {
+            Type interfaceType = iter.next();
+            MethodDoc found = Util.findMethod(interfaceType.asClassDoc(), method);
+            if (found != null) {
+                removeOverriddenMethod(found);
+                if (!overridingMethodFound(found)) {
+                    methlist.add(found);
+                    interfaces.put(found, interfaceType);
+                }
+            }
+        }
+    }
+
+    /**
+     * Search in the method list and check if it contains a method which
+     * is overridden by the method as parameter.  If found, remove the
+     * overridden method from the method list.
+     *
+     * @param method Is this method overriding a method in the method list.
+     */
+    private void removeOverriddenMethod(MethodDoc method) {
+        ClassDoc overriddenClass = method.overriddenClass();
+        if (overriddenClass != null) {
+            for (int i = 0; i < methlist.size(); i++) {
+                ClassDoc cd = methlist.get(i).containingClass();
+                if (cd == overriddenClass || overriddenClass.subclassOf(cd)) {
+                    methlist.remove(i);  // remove overridden method
+                    return;
+                }
+            }
+        }
+    }
+
+    /**
+     * Search in the already found methods' list and check if it contains
+     * a method which is overriding the method parameter or is the method
+     * parameter itself.
+     *
+     * @param method MethodDoc Method to be searched in the Method List for
+     * an overriding method.
+     */
+    private boolean overridingMethodFound(MethodDoc method) {
+        ClassDoc containingClass = method.containingClass();
+        for (int i = 0; i < methlist.size(); i++) {
+            MethodDoc listmethod = methlist.get(i);
+            if (containingClass == listmethod.containingClass()) {
+                // it's the same method.
+                return true;
+            }
+            ClassDoc cd = listmethod.overriddenClass();
+            if (cd == null) {
+                continue;
+            }
+            if (cd == containingClass || cd.subclassOf(containingClass)) {
+                return true;
+            }
+        }
+        return false;
+    }
+}