src/java.httpclient/share/classes/java/net/http/ResponseHeaders.java

*** 46,56 ****
   * The location of "Content-length" is recorded explicitly. Similar approach
   * could be taken for other common headers.
   *
   * This class is not thread-safe
   */
! class ResponseHeaders implements HttpHeaders1 {
  
      static final int DATA_SIZE = 16 * 1024;  // initial space for headers
      static final int NUM_HEADERS = 50; // initial expected max number of headers
  
      final HttpConnection connection;
--- 46,56 ----
   * The location of "Content-length" is recorded explicitly. Similar approach
   * could be taken for other common headers.
   *
   * This class is not thread-safe
   */
! class ResponseHeaders implements HttpHeaders {
  
      static final int DATA_SIZE = 16 * 1024;  // initial space for headers
      static final int NUM_HEADERS = 50; // initial expected max number of headers
  
      final HttpConnection connection;
*** 366,379 ****
              l = populateMapEntry(name);
          }
          return Collections.unmodifiableList(l);
      }
  
-     @Override
-     public void makeUnmodifiable() {
-     }
- 
      // Delegates map to HashMap but converts keys to lower case
  
      static class HeaderMap implements Map<String,List<String>> {
          Map<String,List<String>> inner;
  
--- 366,375 ----