src/share/classes/com/sun/net/httpserver/Headers.java

*** 56,65 ****
--- 56,66 ----
   * Null values can be represented as either a null entry for the key (i.e. the list is null) or
   * where the key has a list, but one (or more) of the list's values is null. Null values are output
   * as a header line containing the key but no associated value.
   * @since 1.6
   */
+ @jdk.Supported
  public class Headers implements Map<String,List<String>> {
  
          HashMap<String,List<String>> map;
  
          public Headers () {map = new HashMap<String,List<String>>(32);}