--- jsr166/src/jsr166x/ConcurrentSkipListSet.java	2010/11/13 05:59:25	1.10
+++ jsr166/src/jsr166x/ConcurrentSkipListSet.java	2011/12/19 19:18:36	1.13
@@ -1,7 +1,7 @@
 /*
  * Written by Doug Lea with assistance from members of JCP JSR-166
  * Expert Group and released to the public domain, as explained at
- * http://creativecommons.org/licenses/publicdomain
+ * http://creativecommons.org/publicdomain/zero/1.0/
  */
 
 package jsr166x;
@@ -253,7 +253,7 @@ public class ConcurrentSkipListSet<E>
         Collection c = (Collection) o;
         try {
             return containsAll(c) && c.containsAll(this);
-        } catch (ClassCastException unused)   {
+        } catch (ClassCastException unused) {
             return false;
         } catch (NullPointerException unused) {
             return false;
@@ -541,11 +541,11 @@ public class ConcurrentSkipListSet<E>
         }
         public E pollFirst() {
             Map.Entry<E,?> e = s.pollFirstEntry();
-            return (e == null)? null : e.getKey();
+            return (e == null) ? null : e.getKey();
         }
         public E pollLast() {
             Map.Entry<E,?> e = s.pollLastEntry();
-            return (e == null)? null : e.getKey();
+            return (e == null) ? null : e.getKey();
         }
 
     }