diff -r 8ca785029fe2 -r 793a36de151d jdk/src/share/classes/java/net/URLClassLoader.java
--- a/jdk/src/share/classes/java/net/URLClassLoader.java	Mon Jan 21 23:17:58 2013 -0500
+++ b/jdk/src/share/classes/java/net/URLClassLoader.java	Mon Jan 21 23:20:42 2013 -0500
@@ -57,6 +57,12 @@
  * <p>
  * The classes that are loaded are by default granted permission only to
  * access the URLs specified when the URLClassLoader was created.
+ * <p>
+ * Where a JAR file contains the {@link Name#PROFILE Profile} attribute
+ * then its value is the name of the Java SE profile that the library
+ * minimally requires. If this runtime does not support the profile then
+ * it causes {@link java.util.jar.UnsupportedProfileException} to be
+ * thrown at some unspecified time.
  *
  * @author  David Connelly
  * @since   1.2