--- /dev/null	Fri Nov 18 14:25:21 2011
+++ new/test/java/util/AbstractCollection/RemoveAllRetainAllNPE.java	Fri Nov 18 14:25:20 2011
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2011, 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     4802647
+ * @summary Unit test for AbstractCollection.removeAll and
+ *          AbstractCollection.retainAll.
+ * @author  Brandon Passanisi
+ */
+import java.util.AbstractCollection;
+import java.util.ArrayList;
+import java.util.Iterator;
+
+public class RemoveAllRetainAllNPE {
+
+    // Create a non-abstract class which extends AbstractCollection, but 
+    // does not override removeAll and retainAll.
+    private static class NewAbstractCollection<E> extends AbstractCollection<E> {
+        
+        ArrayList<E> list = new ArrayList<>();
+        
+        public boolean remove(Object obj) {
+            return list.remove(obj);
+        }
+        
+        public boolean add(E e) {
+            return list.add(e);
+        }
+        
+        public Iterator<E> iterator() {
+            return list.iterator();
+        }
+        
+        public int size() {
+            return list.size();
+        }
+    }
+    
+    static void fail(String s) {
+        throw new RuntimeException(s);
+    }
+    
+    public static void main(String[] args) {
+
+        // Ensure removeAll(null) throws NullPointerException
+        boolean npeThrown = false;
+        try {
+            (new NewAbstractCollection<>()).removeAll(null);
+        } catch (NullPointerException npe) {
+            npeThrown = true;            
+        } catch (Exception e) {
+        }
+        if (!npeThrown) {
+            fail("NullPointerException not thrown for removeAll(null).");
+        }
+
+        // Ensure retainAll(null) throws NullPointerException  
+        npeThrown = false;
+        try {
+            (new NewAbstractCollection<>()).retainAll(null);
+        } catch (NullPointerException npe) {
+            npeThrown = true;            
+        } catch (Exception e) {
+        }
+        if (!npeThrown) {
+            fail("NullPointerException not thrown for retainAll(null).");
+        }
+    }
+}