--- a/src/java.net.http/share/classes/java/net/http/HttpResponse.java	Fri Feb 16 15:06:29 2018 +0000
+++ b/src/java.net.http/share/classes/java/net/http/HttpResponse.java	Fri Feb 16 16:09:14 2018 +0000
@@ -77,19 +77,15 @@
  *
  * @since 11
  */
-public abstract class HttpResponse<T> {
+public interface HttpResponse<T> {
 
-    /**
-     * Creates an HttpResponse.
-     */
-    protected HttpResponse() { }
 
     /**
      * Returns the status code for this response.
      *
      * @return the response code
      */
-    public abstract int statusCode();
+    public int statusCode();
 
     /**
      * Returns the {@link HttpRequest} corresponding to this response.
@@ -101,7 +97,7 @@
      *
      * @return the request
      */
-    public abstract HttpRequest request();
+    public HttpRequest request();
 
     /**
      * Returns an {@code Optional} containing the previous intermediate response
@@ -111,14 +107,14 @@
      *
      * @return an Optional containing the HttpResponse, if any.
      */
-    public abstract Optional<HttpResponse<T>> previousResponse();
+    public Optional<HttpResponse<T>> previousResponse();
 
     /**
      * Returns the received response headers.
      *
      * @return the response headers
      */
-    public abstract HttpHeaders headers();
+    public HttpHeaders headers();
 
     /**
      * Returns the body. Depending on the type of {@code T}, the returned body
@@ -131,7 +127,7 @@
      *
      * @return the body
      */
-    public abstract T body();
+    public T body();
 
     /**
      * Returns an {@link Optional} containing the {@link SSLSession} in effect
@@ -141,7 +137,7 @@
      * @return an {@code Optional} containing the {@code SSLSession} associated
      *         with the response
      */
-    public abstract Optional<SSLSession> sslSession();
+    public Optional<SSLSession> sslSession();
 
     /**
      * Returns the {@code URI} that the response was received from. This may be
@@ -149,14 +145,14 @@
      *
      * @return the URI of the response
      */
-    public abstract URI uri();
+     public URI uri();
 
     /**
      * Returns the HTTP protocol version that was used for this response.
      *
      * @return HTTP protocol version
      */
-    public abstract HttpClient.Version version();
+    public HttpClient.Version version();
 
 
     private static String pathForSecurityCheck(Path path) {

--- a/src/java.net.http/share/classes/jdk/internal/net/http/HttpResponseImpl.java	Fri Feb 16 15:06:29 2018 +0000
+++ b/src/java.net.http/share/classes/jdk/internal/net/http/HttpResponseImpl.java	Fri Feb 16 16:09:14 2018 +0000
@@ -41,7 +41,7 @@
 /**
  * The implementation class for HttpResponse
  */
-class HttpResponseImpl<T> extends HttpResponse<T> implements RawChannel.Provider {
+class HttpResponseImpl<T> implements HttpResponse<T>, RawChannel.Provider {
 
     final int responseCode;
     final Exchange<T> exchange;

--- a/test/jdk/java/net/httpclient/ManyRequestsLegacy.java	Fri Feb 16 15:06:29 2018 +0000
+++ b/test/jdk/java/net/httpclient/ManyRequestsLegacy.java	Fri Feb 16 16:09:14 2018 +0000
@@ -116,7 +116,7 @@
     static final boolean XFIXED = Boolean.getBoolean("test.XFixed");
 
     static class LegacyHttpClient {
-        static final class LegacyHttpResponse extends HttpResponse<byte[]> {
+        static final class LegacyHttpResponse implements HttpResponse<byte[]> {
             final HttpRequest request;
             final byte[] response;
             final int statusCode;

--- a/test/jdk/java/net/httpclient/offline/FixedHttpResponse.java	Fri Feb 16 15:06:29 2018 +0000
+++ b/test/jdk/java/net/httpclient/offline/FixedHttpResponse.java	Fri Feb 16 16:09:14 2018 +0000
@@ -32,7 +32,7 @@
 /**
  * An HttpResponse consisting of the given state.
  */
-public class FixedHttpResponse<T> extends HttpResponse<T> {
+public class FixedHttpResponse<T> implements HttpResponse<T> {
 
     private final int statusCode;
     private final HttpRequest request;