diff --git a/JSONArray.java b/JSONArray.java
index b2717d9..5ccb65b 100644
--- a/JSONArray.java
+++ b/JSONArray.java
@@ -76,7 +76,7 @@ import java.util.Map;
  * </ul>
  *
  * @author JSON.org
- * @version 2015-07-22
+ * @version 2015-10-29
  */
 public class JSONArray implements Iterable<Object> {
 
@@ -151,13 +151,12 @@ public class JSONArray implements Iterable<Object> {
      * @param collection
      *            A Collection.
      */
-    public JSONArray(Collection<Object> collection) {
+    public JSONArray(Collection<?> collection) {
         this.myArrayList = new ArrayList<Object>();
         if (collection != null) {
-            Iterator<Object> iter = collection.iterator();
-            while (iter.hasNext()) {
-                this.myArrayList.add(JSONObject.wrap(iter.next()));
-            }
+        	for (Object o: collection){
+        		this.myArrayList.add(JSONObject.wrap(o));
+        	}
         }
     }
 
@@ -746,7 +745,7 @@ public class JSONArray implements Iterable<Object> {
      *            A Collection value.
      * @return this.
      */
-    public JSONArray put(Collection<Object> value) {
+    public JSONArray put(Collection<?> value) {
         this.put(new JSONArray(value));
         return this;
     }
@@ -799,7 +798,7 @@ public class JSONArray implements Iterable<Object> {
      *            A Map value.
      * @return this.
      */
-    public JSONArray put(Map<String, Object> value) {
+    public JSONArray put(Map<?, ?> value) {
         this.put(new JSONObject(value));
         return this;
     }
@@ -848,7 +847,7 @@ public class JSONArray implements Iterable<Object> {
      * @throws JSONException
      *             If the index is negative or if the value is not finite.
      */
-    public JSONArray put(int index, Collection<Object> value) throws JSONException {
+    public JSONArray put(int index, Collection<?> value) throws JSONException {
         this.put(index, new JSONArray(value));
         return this;
     }
@@ -920,7 +919,7 @@ public class JSONArray implements Iterable<Object> {
      *             If the index is negative or if the the value is an invalid
      *             number.
      */
-    public JSONArray put(int index, Map<String, Object> value) throws JSONException {
+    public JSONArray put(int index, Map<?, ?> value) throws JSONException {
         this.put(index, new JSONObject(value));
         return this;
     }
diff --git a/JSONObject.java b/JSONObject.java
index ed1159e..53cdeec 100755
--- a/JSONObject.java
+++ b/JSONObject.java
@@ -92,7 +92,7 @@ import java.util.Set;
  * </ul>
  *
  * @author JSON.org
- * @version 2015-07-22
+ * @version 2015-12-05
  */
 public class JSONObject {
     /**
@@ -165,10 +165,6 @@ public class JSONObject {
      *            A JSONObject.
      * @param names
      *            An array of strings.
-     * @throws JSONException
-     * @exception JSONException
-     *                If a value is a non-finite number or if a name is
-     *                duplicated.
      */
     public JSONObject(JSONObject jo, String[] names) {
         this();
@@ -241,17 +237,14 @@ public class JSONObject {
      * @param map
      *            A map object that can be used to initialize the contents of
      *            the JSONObject.
-     * @throws JSONException
      */
-    public JSONObject(Map<String, Object> map) {
+    public JSONObject(Map<?, ?> map) {
         this.map = new HashMap<String, Object>();
         if (map != null) {
-            Iterator<Entry<String, Object>> i = map.entrySet().iterator();
-            while (i.hasNext()) {
-                Entry<String, Object> entry = i.next();
-                Object value = entry.getValue();
+        	for (final Entry<?, ?> e : map.entrySet()) {
+                final Object value = e.getValue();
                 if (value != null) {
-                    this.map.put(entry.getKey(), wrap(value));
+                    this.map.put(String.valueOf(e.getKey()), wrap(value));
                 }
             }
         }
@@ -1204,7 +1197,7 @@ public class JSONObject {
      * @return this.
      * @throws JSONException
      */
-    public JSONObject put(String key, Collection<Object> value) throws JSONException {
+    public JSONObject put(String key, Collection<?> value) throws JSONException {
         this.put(key, new JSONArray(value));
         return this;
     }
@@ -1268,7 +1261,7 @@ public class JSONObject {
      * @return this.
      * @throws JSONException
      */
-    public JSONObject put(String key, Map<String, Object> value) throws JSONException {
+    public JSONObject put(String key, Map<?, ?> value) throws JSONException {
         this.put(key, new JSONObject(value));
         return this;
     }
@@ -1663,13 +1656,11 @@ public class JSONObject {
             return value.toString();
         }
         if (value instanceof Map) {
-            @SuppressWarnings("unchecked")
-            Map<String, Object> map = (Map<String, Object>) value;
+            Map<?, ?> map = (Map<?, ?>) value;
             return new JSONObject(map).toString();
         }
         if (value instanceof Collection) {
-            @SuppressWarnings("unchecked")
-            Collection<Object> coll = (Collection<Object>) value;
+            Collection<?> coll = (Collection<?>) value;
             return new JSONArray(coll).toString();
         }
         if (value.getClass().isArray()) {
@@ -1707,16 +1698,14 @@ public class JSONObject {
             }
 
             if (object instanceof Collection) {
-                @SuppressWarnings("unchecked")
-                Collection<Object> coll = (Collection<Object>) object;
+                Collection<?> coll = (Collection<?>) object;
                 return new JSONArray(coll);
             }
             if (object.getClass().isArray()) {
                 return new JSONArray(object);
             }
             if (object instanceof Map) {
-                @SuppressWarnings("unchecked")
-                Map<String, Object> map = (Map<String, Object>) object;
+                Map<?, ?> map = (Map<?, ?>) object;
                 return new JSONObject(map);
             }
             Package objectPackage = object.getClass().getPackage();
@@ -1755,14 +1744,11 @@ public class JSONObject {
         } else if (value instanceof JSONArray) {
             ((JSONArray) value).write(writer, indentFactor, indent);
         } else if (value instanceof Map) {
-            @SuppressWarnings("unchecked")
-            Map<String, Object> map = (Map<String, Object>) value;
+            Map<?, ?> map = (Map<?, ?>) value;
             new JSONObject(map).write(writer, indentFactor, indent);
         } else if (value instanceof Collection) {
-            @SuppressWarnings("unchecked")
-            Collection<Object> coll = (Collection<Object>) value;
-            new JSONArray(coll).write(writer, indentFactor,
-                    indent);
+            Collection<?> coll = (Collection<?>) value;
+            new JSONArray(coll).write(writer, indentFactor, indent);
         } else if (value.getClass().isArray()) {
             new JSONArray(value).write(writer, indentFactor, indent);
         } else if (value instanceof Number) {
diff --git a/README b/README
index dd5d1e6..02d63ad 100755
--- a/README
+++ b/README
@@ -62,3 +62,13 @@ JSONML.java: JSONML provides support for converting between JSONML and XML.
 XMLTokener.java: XMLTokener extends JSONTokener for parsing XML text.
 
 Unit tests are maintained in a separate project. Contributing developers can test JSON-java pull requests with the code in this project: https://github.com/stleary/JSON-Java-unit-test
+
+Release history:
+
+20151123    JSONObject and JSONArray initialization with generics. Contains the
+latest code as of 23 Nov, 2015.
+
+20150729    Checkpoint for Maven central repository release. Contains the latest code as of 29 July, 2015. 
+
+JSON-java releases can be found by searching the Maven repository for groupId "org.json" and artifactId "json". For example: 
+https://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22org.json%22%20AND%20a%3A%22json%22