Minor fixes of unecessary casts/imports

bug 37915, from Nathan Beyer

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/collections/trunk@357494 13f79535-47bb-0310-9956-ffa450edef68

project.xml

@@ -193,6 +193,9 @@
     <contributor>
       <name>Christopher Berry</name>
     </contributor>
+    <contributor>
+      <name>Nathan Beyer</name>
+    </contributor>
     <contributor>
       <name>Janek Bogucki</name>
     </contributor>

src/java/org/apache/commons/collections/DefaultMapBag.java

@@ -181,7 +181,7 @@ public abstract class DefaultMapBag implements Bag {
             return false;
         }
         for (Iterator it = _map.keySet().iterator(); it.hasNext();) {
-            Object element = (Object) it.next();
+            Object element = it.next();
             if (other.getCount(element) != getCount(element)) {
                 return false;
             }

src/java/org/apache/commons/collections/MapUtils.java

@@ -18,7 +18,6 @@ package org.apache.commons.collections;
 import java.io.PrintStream;
 import java.text.NumberFormat;
 import java.text.ParseException;
-import java.util.Collection;
 import java.util.Collections;
 import java.util.Enumeration;
 import java.util.HashMap;
@@ -34,6 +33,7 @@ import org.apache.commons.collections.map.FixedSizeSortedMap;
 import org.apache.commons.collections.map.LazyMap;
 import org.apache.commons.collections.map.LazySortedMap;
 import org.apache.commons.collections.map.ListOrderedMap;
+import org.apache.commons.collections.map.MultiValueMap;
 import org.apache.commons.collections.map.PredicatedMap;
 import org.apache.commons.collections.map.PredicatedSortedMap;
 import org.apache.commons.collections.map.TransformedMap;
@@ -42,7 +42,6 @@ import org.apache.commons.collections.map.TypedMap;
 import org.apache.commons.collections.map.TypedSortedMap;
 import org.apache.commons.collections.map.UnmodifiableMap;
 import org.apache.commons.collections.map.UnmodifiableSortedMap;
-import org.apache.commons.collections.map.MultiValueMap;
 
 /** 
  * Provides utility methods and decorators for
@@ -1066,7 +1065,6 @@ public class MapUtils {
      * different keys, the returned map will map one of those keys to the 
      * value, but the exact key which will be mapped is undefined.
      *
-     * @see DoubleOrderedMap
      * @param map  the map to invert, may not be null
      * @return a new HashMap containing the inverted data
      * @throws NullPointerException if the map is null

src/java/org/apache/commons/collections/set/MapBackedSet.java

@@ -114,7 +114,7 @@ public final class MapBackedSet implements Set, Serializable {
     public boolean addAll(Collection coll) {
         int size = map.size();
         for (Iterator it = coll.iterator(); it.hasNext();) {
-            Object obj = (Object) it.next();
+            Object obj = it.next();
             map.put(obj, dummyValue);
         }
         return (map.size() != size);