diff --git a/org.springframework.core/src/main/java/org/springframework/core/collection/package-info.java b/org.springframework.core/src/main/java/org/springframework/core/collection/package-info.java
deleted file mode 100644
index 4a890ba1f9e..00000000000
--- a/org.springframework.core/src/main/java/org/springframework/core/collection/package-info.java
+++ /dev/null
@@ -1,6 +0,0 @@
-
-/**
- * Collection extensions used in the framework.
- */
-package org.springframework.core.collection;
-
diff --git a/org.springframework.core/src/main/java/org/springframework/core/collection/CompositeIterator.java b/org.springframework.core/src/main/java/org/springframework/util/CompositeIterator.java
similarity index 84%
rename from org.springframework.core/src/main/java/org/springframework/core/collection/CompositeIterator.java
rename to org.springframework.core/src/main/java/org/springframework/util/CompositeIterator.java
index 7241259fe3a..67935ae6b4c 100644
--- a/org.springframework.core/src/main/java/org/springframework/core/collection/CompositeIterator.java
+++ b/org.springframework.core/src/main/java/org/springframework/util/CompositeIterator.java
@@ -13,18 +13,16 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.springframework.core.collection;
+package org.springframework.util;
 
 import java.util.Iterator;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.NoSuchElementException;
 
-import org.springframework.util.Assert;
-
 /**
- * Iterator that combines multiple other iterators. This is a simple implementation that just maintains a list of
- * iterators which are invoked in sequence untill all iterators are exhausted.
+ * Iterator that combines multiple other iterators.
+ * This implementation maintains a list of iterators which are invoked in sequence until all iterators are exhausted.
  * @author Erwin Vervaet
  */
 public class CompositeIterator<E> implements Iterator<E> {
diff --git a/org.springframework.core/src/main/java/org/springframework/core/collection/SharedMap.java b/org.springframework.core/src/main/java/org/springframework/util/SharedMap.java
similarity index 85%
rename from org.springframework.core/src/main/java/org/springframework/core/collection/SharedMap.java
rename to org.springframework.core/src/main/java/org/springframework/util/SharedMap.java
index d6669bbc808..247e341d0dc 100644
--- a/org.springframework.core/src/main/java/org/springframework/core/collection/SharedMap.java
+++ b/org.springframework.core/src/main/java/org/springframework/util/SharedMap.java
@@ -13,16 +13,15 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.springframework.core.collection;
+package org.springframework.util;
 
 import java.util.Map;
 
 /**
  * A simple subinterface of {@link Map} that exposes a mutex that application code can synchronize on.
  * <p>
- * Expected to be implemented by Maps that are backed by shared objects that require synchronization between multiple
- * threads. An example would be the HTTP session map.
- * 
+ * Expected to be implemented by Maps that are backed by shared objects that require synchronization between multiple threads.
+ * An example would be the HTTP session map.
  * @author Keith Donald
  */
 public interface SharedMap<K, V> extends Map<K, V> {
diff --git a/org.springframework.core/src/main/java/org/springframework/core/collection/SharedMapDecorator.java b/org.springframework.core/src/main/java/org/springframework/util/SharedMapDecorator.java
similarity index 89%
rename from org.springframework.core/src/main/java/org/springframework/core/collection/SharedMapDecorator.java
rename to org.springframework.core/src/main/java/org/springframework/util/SharedMapDecorator.java
index a20c5695981..0dfba3adba7 100644
--- a/org.springframework.core/src/main/java/org/springframework/core/collection/SharedMapDecorator.java
+++ b/org.springframework.core/src/main/java/org/springframework/util/SharedMapDecorator.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.springframework.core.collection;
+package org.springframework.util;
 
 import java.io.Serializable;
 import java.util.Collection;
@@ -23,9 +23,9 @@ import java.util.Set;
 import org.springframework.core.style.ToStringCreator;
 
 /**
- * A map decorator that implements <code>SharedMap</code>. By default, simply returns the map itself as the mutex.
+ * A map decorator that implements <code>SharedMap</code>.
+ * By default, simply returns the map itself as the mutex.
  * Subclasses may override to return a different mutex object.
- * 
  * @author Keith Donald
  */
 @SuppressWarnings("serial")
diff --git a/org.springframework.core/src/main/java/org/springframework/core/collection/StringKeyedMapAdapter.java b/org.springframework.core/src/main/java/org/springframework/util/StringKeyedMapAdapter.java
similarity index 93%
rename from org.springframework.core/src/main/java/org/springframework/core/collection/StringKeyedMapAdapter.java
rename to org.springframework.core/src/main/java/org/springframework/util/StringKeyedMapAdapter.java
index 9716d59d951..6b226ed260f 100644
--- a/org.springframework.core/src/main/java/org/springframework/core/collection/StringKeyedMapAdapter.java
+++ b/org.springframework.core/src/main/java/org/springframework/util/StringKeyedMapAdapter.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.springframework.core.collection;
+package org.springframework.util;
 
 import java.util.AbstractSet;
 import java.util.Collection;
@@ -23,9 +23,8 @@ import java.util.NoSuchElementException;
 import java.util.Set;
 
 /**
- * Base class for map adapters whose keys are String values. Concrete classes need only implement the abstract hook
- * methods defined by this class.
- * 
+ * Base class for map adapters whose keys are String values.
+ * Concrete classes need only implement the abstract hook methods defined by this class.
  * @author Keith Donald
  */
 public abstract class StringKeyedMapAdapter<V> implements Map<String, V> {
diff --git a/org.springframework.core/src/test/java/org/springframework/util/CompositeIteratorTests.java b/org.springframework.core/src/test/java/org/springframework/util/CompositeIteratorTests.java
new file mode 100644
index 00000000000..a92086e4ea9
--- /dev/null
+++ b/org.springframework.core/src/test/java/org/springframework/util/CompositeIteratorTests.java
@@ -0,0 +1,98 @@
+package org.springframework.util;
+
+import java.util.Arrays;
+import java.util.Iterator;
+import java.util.List;
+import java.util.NoSuchElementException;
+
+import junit.framework.TestCase;
+
+/**
+ * Test case for {@link CompositeIterator}.
+ * 
+ * @author Erwin Vervaet
+ */
+public class CompositeIteratorTests extends TestCase {
+
+	public void testNoIterators() {
+		CompositeIterator it = new CompositeIterator();
+		assertFalse(it.hasNext());
+		try {
+			it.next();
+			fail();
+		} catch (NoSuchElementException e) {
+			// expected
+		}
+	}
+
+	public void testSingleIterator() {
+		CompositeIterator it = new CompositeIterator();
+		it.add(Arrays.asList(new String[] { "0", "1" }).iterator());
+		for (int i = 0; i < 2; i++) {
+			assertTrue(it.hasNext());
+			assertEquals(String.valueOf(i), it.next());
+		}
+		assertFalse(it.hasNext());
+		try {
+			it.next();
+			fail();
+		} catch (NoSuchElementException e) {
+			// expected
+		}
+	}
+
+	public void testMultipleIterators() {
+		CompositeIterator it = new CompositeIterator();
+		it.add(Arrays.asList(new String[] { "0", "1" }).iterator());
+		it.add(Arrays.asList(new String[] { "2" }).iterator());
+		it.add(Arrays.asList(new String[] { "3", "4" }).iterator());
+		for (int i = 0; i < 5; i++) {
+			assertTrue(it.hasNext());
+			assertEquals(String.valueOf(i), it.next());
+		}
+		assertFalse(it.hasNext());
+		try {
+			it.next();
+			fail();
+		} catch (NoSuchElementException e) {
+			// expected
+		}
+	}
+
+	public void testInUse() {
+		List list = Arrays.asList(new String[] { "0", "1" });
+		CompositeIterator it = new CompositeIterator();
+		it.add(list.iterator());
+		it.hasNext();
+		try {
+			it.add(list.iterator());
+			fail();
+		} catch (IllegalStateException e) {
+			// expected
+		}
+		it = new CompositeIterator();
+		it.add(list.iterator());
+		it.next();
+		try {
+			it.add(list.iterator());
+			fail();
+		} catch (IllegalStateException e) {
+			// expected
+		}
+	}
+
+	public void testDuplicateIterators() {
+		List list = Arrays.asList(new String[] { "0", "1" });
+		Iterator iterator = list.iterator();
+		CompositeIterator it = new CompositeIterator();
+		it.add(iterator);
+		it.add(list.iterator());
+		try {
+			it.add(iterator);
+			fail();
+		} catch (IllegalArgumentException e) {
+			// expected
+		}
+	}
+
+}
diff --git a/org.springframework.core/src/test/java/org/springframework/util/SharedMapDecoratorTests.java b/org.springframework.core/src/test/java/org/springframework/util/SharedMapDecoratorTests.java
new file mode 100644
index 00000000000..eeadb13b1e9
--- /dev/null
+++ b/org.springframework.core/src/test/java/org/springframework/util/SharedMapDecoratorTests.java
@@ -0,0 +1,62 @@
+package org.springframework.util;
+
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+
+import junit.framework.TestCase;
+
+/**
+ * Unit tests for {@link org.springframework.binding.collection.SharedMapDecorator}.
+ */
+public class SharedMapDecoratorTests extends TestCase {
+
+	private SharedMapDecorator map = new SharedMapDecorator(new HashMap());
+
+	public void testGetPutRemove() {
+		assertTrue(map.size() == 0);
+		assertTrue(map.isEmpty());
+		assertNull(map.get("foo"));
+		assertFalse(map.containsKey("foo"));
+		map.put("foo", "bar");
+		assertTrue(map.size() == 1);
+		assertFalse(map.isEmpty());
+		assertNotNull(map.get("foo"));
+		assertTrue(map.containsKey("foo"));
+		assertTrue(map.containsValue("bar"));
+		assertEquals("bar", map.get("foo"));
+		map.remove("foo");
+		assertTrue(map.size() == 0);
+		assertNull(map.get("foo"));
+	}
+
+	public void testPutAll() {
+		Map all = new HashMap();
+		all.put("foo", "bar");
+		all.put("bar", "baz");
+		map.putAll(all);
+		assertTrue(map.size() == 2);
+	}
+
+	public void testEntrySet() {
+		map.put("foo", "bar");
+		map.put("bar", "baz");
+		Set entrySet = map.entrySet();
+		assertTrue(entrySet.size() == 2);
+	}
+
+	public void testKeySet() {
+		map.put("foo", "bar");
+		map.put("bar", "baz");
+		Set keySet = map.keySet();
+		assertTrue(keySet.size() == 2);
+	}
+
+	public void testValues() {
+		map.put("foo", "bar");
+		map.put("bar", "baz");
+		Collection values = map.values();
+		assertTrue(values.size() == 2);
+	}
+}
diff --git a/org.springframework.core/src/test/java/org/springframework/util/StringKeyedMapAdapterTests.java b/org.springframework.core/src/test/java/org/springframework/util/StringKeyedMapAdapterTests.java
new file mode 100644
index 00000000000..13edc718679
--- /dev/null
+++ b/org.springframework.core/src/test/java/org/springframework/util/StringKeyedMapAdapterTests.java
@@ -0,0 +1,82 @@
+package org.springframework.util;
+
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
+
+import junit.framework.TestCase;
+
+/**
+ * Unit tests for {@link org.springframework.binding.collection.StringKeyedMapAdapter}.
+ */
+public class StringKeyedMapAdapterTests extends TestCase {
+
+	private Map contents = new HashMap();
+
+	private StringKeyedMapAdapter map = new StringKeyedMapAdapter() {
+
+		protected Object getAttribute(String key) {
+			return contents.get(key);
+		}
+
+		protected Iterator getAttributeNames() {
+			return contents.keySet().iterator();
+		}
+
+		protected void removeAttribute(String key) {
+			contents.remove(key);
+		}
+
+		protected void setAttribute(String key, Object value) {
+			contents.put(key, value);
+		}
+	};
+
+	public void testGetPutRemove() {
+		assertTrue(map.size() == 0);
+		assertTrue(map.isEmpty());
+		assertNull(map.get("foo"));
+		assertFalse(map.containsKey("foo"));
+		map.put("foo", "bar");
+		assertTrue(map.size() == 1);
+		assertFalse(map.isEmpty());
+		assertNotNull(map.get("foo"));
+		assertTrue(map.containsKey("foo"));
+		assertTrue(map.containsValue("bar"));
+		assertEquals("bar", map.get("foo"));
+		map.remove("foo");
+		assertTrue(map.size() == 0);
+		assertNull(map.get("foo"));
+	}
+
+	public void testPutAll() {
+		Map all = new HashMap();
+		all.put("foo", "bar");
+		all.put("bar", "baz");
+		map.putAll(all);
+		assertTrue(map.size() == 2);
+	}
+
+	public void testEntrySet() {
+		map.put("foo", "bar");
+		map.put("bar", "baz");
+		Set entrySet = map.entrySet();
+		assertTrue(entrySet.size() == 2);
+	}
+
+	public void testKeySet() {
+		map.put("foo", "bar");
+		map.put("bar", "baz");
+		Set keySet = map.keySet();
+		assertTrue(keySet.size() == 2);
+	}
+
+	public void testValues() {
+		map.put("foo", "bar");
+		map.put("bar", "baz");
+		Collection values = map.values();
+		assertTrue(values.size() == 2);
+	}
+}
diff --git a/org.springframework.web/src/main/java/org/springframework/web/context/request/NativeWebRequestParameterMap.java b/org.springframework.web/src/main/java/org/springframework/web/context/request/NativeWebRequestParameterMap.java
index a795ca53f53..523b8f69c05 100644
--- a/org.springframework.web/src/main/java/org/springframework/web/context/request/NativeWebRequestParameterMap.java
+++ b/org.springframework.web/src/main/java/org/springframework/web/context/request/NativeWebRequestParameterMap.java
@@ -17,8 +17,8 @@ package org.springframework.web.context.request;
 
 import java.util.Iterator;
 
-import org.springframework.core.collection.StringKeyedMapAdapter;
 import org.springframework.util.Assert;
+import org.springframework.util.StringKeyedMapAdapter;
 
 /**
  * Map backed by a Web request parameter map for accessing request parameters.